Spotting and Treating Root Rot

Spring in Minnesota brings welcome warmth and new growth, but it also brings a hidden threat to your trees…root rot. Thanks to heavy rains, melting snow, and poorly drained soil, root rot becomes a common problem this time of year. Left untreated, it can lead to declining health or even the death of your trees.

In this guide, we’ll walk you through how to spot the signs of root rot, why soggy soil plays a major role, and what steps you can take to prevent and treat it effectively, whether you live in the heart of the Twin Cities or surrounding communities like Maple Grove, Eden Prairie, Minnetonka, and so forth.

What is root rot?

Root rot is a fungal disease that affects the roots of trees and plants, causing them to decay and die. It’s typically caused by overwatering or poor drainage, creating the perfect environment for fungi like Phytophthora to thrive. In Minnesota, the frequent spring thaw combined with saturated soil can be a recipe for trouble, especially in low-lying areas and properties with clay-heavy soils in places like Plymouth and Wayzata.

How can you spot root rot in your trees?

Because root rot happens below ground, it can be tricky to catch early. But here are some above-ground signs to look for:

• Yellowing or wilting leaves

• Stunted growth or sudden dieback

• Soft, mushy roots (if exposed)

• Cankers or discoloration near the base of the tree

• A thinning or uneven canopy

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If you notice any of these signs, it’s time to take a closer look, or better yet, call a certified arborist to inspect your tree. Our tree inspection services can help diagnose the issue early. We proudly serve residents across Minnetonka, Eden Prairie, and other Twin Cities metro areas.

Why is soggy soil a problem for your trees roots?

Minnesota’s spring moisture can linger, especially in compacted or clay-heavy soils. When water can’t drain properly, oxygen can’t reach the roots. This lack of oxygen stresses the tree and allows fungi to take hold.

Improper grading, poor landscape design, or simply heavy rainfall can all contribute to soggy soil. Even healthy trees can fall victim if the conditions are right. This is something we often see in neighborhoods across Excelsior, Mound, and Maple Grove.

How can homeowners improve drainage?

Preventing root rot starts with better drainage. Here are a few ways you can protect your trees:

• Aerate the soil to improve water absorption and root oxygenation

• Install drainage systems such as French drains or dry wells

• Avoid overwatering and adjust irrigation based on rainfall

• Mulch carefully – keep mulch away from the base of the tree to prevent excess moisture retention

• Regrade your landscape if necessary to promote runoff

If your tree is already showing symptoms, don’t wait. Root rot can progress quickly, especially during the wet spring season.

How Birch Tree Care can help

At Birch Tree Care, we’re no strangers to Minnesota’s (or surrounding areas) tricky spring conditions. Our certified arborists can assess your tree’s health, test for root rot, and offer effective solutions. These might include:

• Soil treatments to improve drainage and suppress fungal growth

• Root collar excavations to expose and treat infected areas

• Selective pruning to remove diseased limbs and reduce tree stress

• Ongoing tree health care plans to build long-term resilience

We’ll also help you determine if removal is necessary in severe cases. Our tree removal services are handled with safety and care, always putting your property first. 

Root rot is preventable, but only if caught early. By learning the signs and improving your property’s drainage, you can keep your trees thriving through spring and beyond. And if you’re not sure where to start,  our team is just a call away. Let us help you protect your landscape and restore your peace of mind this season.

7 Critical Signs Your Tree Needs Deep Root Fertilization in Minnesota

Why Tree Health Matters in Minnesota

Minnesota’s diverse climate and soil conditions present unique challenges for tree health. From frigid winters and heavy snowfalls to compacted urban soils, trees often struggle to access the nutrients they need to thrive. At Birch Tree Care, we know how important it is to protect your trees from these environmental stressors through tree service and fertilization. One of the best ways to do this is through deep root fertilization, a specialized process that delivers essential nutrients directly to your tree’s root zone.

If you've noticed thinning leaves, slower growth, or weak branches, your tree may be calling out for help. Let’s explore the signs that your trees might need deep root fertilization – and why this treatment is especially critical for Minnesota landscapes.

What is Deep Root Fertilization?

Deep root fertilization involves injecting a nutrient-rich solution directly into the soil around a tree’s root zone, typically 6–12 inches below the surface. Unlike surface fertilizing, which often gets absorbed by grass or washes away, this method ensures nutrients reach the roots where they're needed most.

Our experts at Birch Tree Care use a carefully balanced formula that replenishes depleted soils, encouraging strong growth and resilience – a must in Minnesota’s nutrient-poor and often compacted soils.

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Sign 1: Sparse or Discolored Leaves

One of the earliest signs of nutrient deficiency is leaf discoloration. If you notice your tree’s leaves turning pale green or yellow (a condition known as chlorosis), it might be due to a lack of iron, manganese, or other essential micronutrients.

Why This Happens in Minnesota:

• Many Minnesota soils, especially in urban areas like the Twin Cities, have high pH levels, which limit nutrient availability.

• Chlorosis is particularly common in Oak, Maple, and Birch trees – species we frequently care for at Birch Tree Care.

Deep root fertilization helps by providing nutrients directly to the roots, giving leaves back their vibrant green color.

Sign 1: Sparse or Discolored Leaves

Have you noticed that your tree isn’t growing as quickly as it used to? Stunted growth and thinning canopies are often linked to poor nutrient availability. Trees need a steady supply of nitrogen, phosphorus, and potassium to grow strong and healthy.

Minnesota-Specific Factors:

• Long, cold winters shorten the growing season.

• Compacted soil, common in urban developments, restricts root growth and nutrient uptake.

Regular deep root fertilization ensures that your trees have access to these critical nutrients, even in challenging environments.

Sign 3: Premature Leaf Drop

Minnesota trees naturally drop their leaves in the fall, but if you’re seeing early leaf loss in summer, it could signal a nutrient deficiency or environmental stress.

What Causes This:

• Drought stress during hot summers.

• Nutrient deficiencies that weaken the tree’s ability to hold leaves.

• Compacted soil prevents water and nutrient absorption.

Deep root fertilization restores balance, helping trees retain their foliage longer.

Sign 4: Weak Branches or Dieback

Weak, brittle branches or dead limbs (known as dieback) can indicate a lack of essential nutrients. In Minnesota, heavy snow and ice can worsen the problem, causing weakened limbs to break.

Key Causes:

• Insufficient potassium, which supports structural integrity.

• Repeated freeze-thaw cycles that stress tree tissues.

A professional deep root fertilization treatment provides the nutrients necessary to strengthen branches and reduce the risk of damage.

Sign 5: Increased Pest and Disease Vulnerability

Nutrient-deficient trees are more susceptible to pests like emerald ash borers and diseases like oak wilt – both major concerns here in Minnesota.

How Fertilization Helps:

• A well-nourished tree produces more defensive chemicals to fight pests.

• Healthy growth patterns reduce entry points for diseases.

Birch Tree Care’s deep root fertilization service enhances your tree’s natural defenses, keeping pests and pathogens at bay.

The Impact of Minnesota’s Unique Climate on Tree Health

Minnesota's freeze-thaw cycles, compacted urban soils, and short growing seasons create significant challenges for tree health. Without adequate nutrients, trees may struggle to recover from seasonal stress and continue growing.

Unique Climate Factors:

• Freeze-Thaw Cycles: Repeated freezing and thawing can damage root systems and make nutrients less available.

• Compacted Urban Soils: In cities like Minneapolis and St. Paul, heavily compacted soil limits water and nutrient absorption.

• Short Growing Season: Trees have a shorter window to gather resources, making timely fertilization critical.

When is the Best Time for Deep Root Fertilization in Minnesota?

Timing is crucial when it comes to tree fertilization. In Minnesota, the most effective periods for deep root fertilization are early spring and late fall.

Why These Seasons Matter:

• Spring: Fertilizing before the growing season gives trees the nutrients they need to produce new growth.

• Fall: Late-season applications help strengthen roots for winter survival.

Summer fertilization is less common, as heat and drought can stress trees further.

Long-Term Benefits of Deep Root Fertilization

Investing in regular deep root fertilization provides long-lasting benefits that go beyond immediate improvements in leaf color or growth.

Key Advantages:

• Stronger Roots: Enhanced nutrient availability promotes deeper, more resilient root systems.

• Improved Growth: Trees grow faster and develop fuller canopies when they receive the right nutrients.

• Pest and Disease Resistance: Healthy, well-fed trees can better defend against Minnesota-specific threats like Emerald Ash Borer and Oak Wilt.

• Increased Lifespan: Properly fertilized trees live longer, healthier lives, adding value to your property.

Frequently Asked Questions (FAQs)

How do I know if my tree needs fertilization?

Look for signs like discolored leaves, stunted growth, early leaf drop, or weak branches. If you’re unsure, our arborists can assess your tree’s condition.

Can fertilization save a dying tree?

In some cases, yes. If nutrient deficiency is the cause of the decline, deep root fertilization can restore health. However, trees affected by severe disease or structural damage may not recover.

How often should I fertilize my trees?

Most Minnesota trees benefit from annual fertilization, though specific timing may vary based on soil conditions and tree species.

Is deep root fertilization safe for the environment?

Yes. We use eco-friendly, slow-release formulas that nourish your trees without harming surrounding plants or groundwater.

How does Minnesota’s climate affect fertilization timing?

The state’s short growing season and harsh winters make spring and fall the best times to fertilize. Our team can help you find the ideal window for your trees.

Partner with Birch Tree Care to Protect Your Trees

Trees are a valuable part of Minnesota’s natural beauty, but they need proper care to thrive. Deep root fertilization is a proactive, effective solution to combat nutrient deficiencies, environmental stress, and seasonal challenges.

If you’ve noticed signs like discolored leaves, slow growth, or increased pest activity, it might be time to give your trees the nutrients they need to stay strong. Contact Birch Tree Care today to schedule a consultation – we’re here to help your trees grow healthier and stronger for years to come.

Protect Your Minnesota Landscape with DeerPro

Minnesota homeowners and property managers face a common challenge: maintaining a beautiful, thriving landscape while keeping deer at bay. As temperatures drop and natural food sources become scarce, deer often turn to residential properties, feeding on trees, shrubs, and plants. This not only damages the aesthetic appeal of your landscape but can also lead to long-term health issues for your plants.

At Birch Tree Care, we understand the frustration of investing in your landscape only to see it ravaged by deer. Our mission is to provide competitive, honest, and professional solutions that protect your property. One of the most effective ways to prevent deer damage is through DeerPro, a professional-grade repellent designed for long-lasting protection.

Understanding Deer Damage: Why Your Landscape is at Risk

Deer are opportunistic feeders, and when food sources become limited, they turn to the trees, shrubs, and perennials in your yard. Certain plant species are especially vulnerable, and repeated deer browsing can lead to stunted growth, disease, and even plant death.

Here are some common ways deer can damage your landscape:

1. Bark Stripping on Trees

During the fall and winter months, deer rely on tree bark as a food source. They use their teeth to strip bark from trunks and branches, which can expose trees to pests, fungal infections, and decay. This damage is especially harmful to young trees that have not yet developed strong, protective bark.

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2. Feeding on Shrubs and Perennials

Deer prefer tender, nutritious foliage, making ornamental shrubs and perennials a prime target. If you have invested in landscaping with species like arborvitae, hostas, or tulips, you may notice them being eaten down to the stem.

3. Trampling and Soil Disruption

Large deer populations can lead to overgrazing and soil compaction, which can affect the growth of grass, flowers, and other plantings. Their hooves create stress on delicate root systems, reducing the ability of plants to absorb nutrients.

4. Repeated Damage and Deer Trails

Deer are creatures of habit, meaning once they identify a reliable food source, they will return repeatedly. This can result in permanent damage and even attract more deer to your property.

The Solution: How DeerPro Provides Reliable Protection

Many homeowners try DIY solutions like homemade sprays, fencing, or deer-resistant plantings, but these methods often require constant maintenance and are not 100% effective. That’s why professional applications like DeerPro are the best option for long-term, low-maintenance protection.

DeerPro offers two specialized formulas designed to protect your landscape year-round.

DeerPro Winter Protect: Defense Against Harsh Conditions

• Applied in late fall, this single application lasts all winter

• Forms a durable, water-resistant coating that prevents deer from feeding on treated plants

• Reduces the risk of bark stripping and shrub damage during the coldest months

Unlike many store-bought deer repellents that wash away in rain or snow, DeerPro Winter Protect remains effective throughout Minnesota’s harsh winter season.

DeerPro Growing Season: Continuous Protection for Lush Growth

• Applied in spring and summer, when plants are actively growing

• Protects new, tender growth on shrubs, trees, and perennials

• Remains odorless to humans while effectively repelling deer

Because it’s a professionally applied solution, DeerPro provides superior coverage and reliability compared to DIY treatments.

Deer Health

How Does Deer Pro Affect Deer?

Deer Pro is formulated to serve primarily as a deterrent—its ingredients create a scent or taste that deer find unpleasant, prompting them to avoid treated areas. Because it relies on naturally distasteful or repellent components rather than toxic chemicals, it does not harm the deer. Instead, it encourages them to seek alternative feeding grounds, helping minimize damage to plants without endangering wildlife.

Is It Just a Repellent?

Yes. Deer Pro’s main function is to repel deer by making the treated foliage less appealing. It does not contain substances intended to injure or kill deer.

Does It Harm Deer or Impact Their Natural Patterns?

Deer Pro is not harmful to deer when used as directed. It causes minimal disruption to their overall habits beyond discouraging them from browsing in specific areas. The aversion effect typically does not result in significant changes to migration routes, reproductive cycles, or other natural behaviors. Instead, deer simply learn to avoid the spots where Deer Pro has been applied, protecting plants without negatively affecting the health or wellbeing of the animals.

Why Trust Birch Tree Care for Your DeerPro Application?

At Birch Tree Care, we prioritize honesty, professionalism, and competitive service. Our team of certified arborists and landscape specialists has extensive experience in tree care and landscape preservation, ensuring that your property receives the highest level of care.

Here’s why Minnesota homeowners and businesses trust us with their DeerPro applications:

• Expert Property Assessments: We evaluate your landscape to determine the best treatment plan for your needs.

• Professional-Grade Application: Our trained technicians apply DeerPro with precision, ensuring full coverage and long-lasting results.

• Cost-Effective Protection: Investing in DeerPro prevents expensive damage and plant replacements, saving you money in the long run.

• Customized Solutions: We provide personalized recommendations to maximize the health and beauty of your landscape.

Tips for Keeping Deer Away

While DeerPro is one of the most effective solutions available, there are additional steps you can take to reduce deer activity on your property:

1. Choose Deer-Resistant Plants

Some plants are naturally less appealing to deer. Consider incorporating species such as:

• Boxwood

• Daffodils

• Lavender

• Yarrow

• Spruce trees

2. Install Strategic Fencing or Barriers

Physical barriers, such as tall fencing, netting, or motion-activated deterrents, can help reduce deer access to vulnerable areas.

3. Rotate Repellents and Strategies 

If deer become accustomed to a single deterrent, they may adapt over time. Using a combination of DeerPro, fencing, and plant choices can create a multi-layered defense.

4. Keep Your Landscape Well-Maintained

Regular pruning, mulching, and fertilization help trees and shrubs recover from minor deer damage and improve their resilience.

Schedule Your DeerPro Treatment Today

Deer damage can quickly diminish the beauty and health of your landscape. Instead of waiting for costly repairs, take proactive steps with DeerPro applications from Birch Tree Care. Our expert team is ready to help you protect your property with Minnesota’s most effective deer deterrent solution.

Contact Birch Tree Care today to schedule a consultation and professional DeerPro application.

Call us now or request a quote online to get started!

Emerald Ash Borer Treatment in the Twin Cities

What Is Emerald Ash Borer?

The Emerald Ash Borer (EAB) is a beetle native to Asia that feeds on ash trees. This invasive species has disrupted North American ecosystems. EAB has devastated many regions in the US, including Minnesota.

Since 2009, EAB has affected over 25 million Ash trees in the U.S., resulting in an estimated $10.7 billion in economic losses. Early detection and intervention during the early stages of infestation can significantly improve treatment outcomes.

How Does Emerald Ash Borer Affect Your Trees?

The key to understanding how the EAB affects your trees is to have a little insight into the beetle’s behavior. Emerald Ash Borer eggs are laid in the crevices and cracks of Ash tree bark. These eggs later hatch and the larvae that emerge begin wreaking havoc. They start chewing through the bark into the tree’s phloem and xylem, where they continue feeding and developing.

What are the phloem and xylem? They are critical internal structures of a tree that allow the transport of water and minerals inside the tree (similar to your veins and arteries in your body). The larvae burrow into the sapwood, creating galleries that disrupt the tree's ability to transport nutrients.

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Any damage to these structures is incredibly harmful to the tree’s health. If enough of these structures are damaged the tree will eventually wither and die. Therefore, the Emerald Ash Borer works similarly to a parasite that is slowly destroying your trees and the value of your property.

Why Do You Need Emerald Ash Borer Tree Treatment?

An Emerald Ash Borer (EAB) infestation in your yard will unlikely be contained to a single Ash tree. In most cases, the disease will spread to surrounding ash trees in a very short amount of time. If left untreated, the end result will be thousands of dollars in tree and property damage.

Additionally, there are also severe climate effects. The destruction of ash trees by EAB releases the same amount of carbon each year as 4.4 million cars by releasing stored carbon deposits.

Our Emerald Ash Borer Treatment Services

Birch Tree Care is ready to be of service in the event of an Emerald Ash Borer (EAB) infestation. Birch Tree Care offers three Emerald Ash Borer treatment options. The best type of treatment will be dependent on the level of infestation our team would conclude upon inspection.

Additionally, these treatments are applicable to all ash trees. These include Black Ash, Green Ash and White Ash trees. In some cases, Ash tree removal is necessary to prevent the spread of EAB and protect other trees. Here is a brief description of these Emerald Ash Borer treatments.

Trunk Injection

Another popular method in the St. Paul and Minneapolis areas is to inject the insecticide solution directly into the trunk of the Ash tree. This is done by directly drilling through the bark of the Ash tree and into the sapwood. Trunk injected insecticides, particularly those containing emamectin benzoate, are effective for protecting high-value Ash trees from Emerald Ash Borer (EAB) infestations.

This method is typically applied on sites where soil treatments may be unavailable. Such environments include wet, sandy, compacted, concrete, and soil landscapes. This is a diverse treatment option that can be applied to a number of different and challenging environments.

Avoid implementing this method without professional support. This method has a high margin of error. Drilling into the tree without the proper care or training can cause long-term damage or wounds that may cost you more to fix in the future.

Soil Injection

Also known as Imidacloprid, this method drenches the surrounding soil with systemic insecticides. This method ensures the tree absorbs the insecticide, targeting and eliminating EAB larvae. After mixing this insecticide with water, the solution is then poured directly onto the soil around the base of the trunk of the affected tree. This method is also referred to as a soil drench, where insecticides are applied to the soil to control EAB. What is the result? The solution is absorbed by the tree roots which then spread the insecticide solution throughout the tree, thus ensuring that the EAB is removed.

Without professional help, employing this method can result in the solution binding to surface layers of organic matter and ultimately reducing the absorption.

Remove & Replace the Ash Tree

While treatment is an option, it may not always be financially viable. Some communities offer discounted emerald ash borer treatment and removal programs. To find out what might be available in your area, check your city’s website or contact your local forester.

Infestations may take up to three years to appear with larger trees. In that time, EAB will likely have destroyed too much of the tree’s inside structures. Therefore, it could be too late to save it with soil or trunk injections. Thus, the remove and replace option becomes your only remaining option. EAB-infested Ash trees may need to be removed and replaced if the invasion is too severe. We recommend hiring a professional for this method, as removing the tree is only one problem.

Another consideration is selecting an appropriate replacement tree. Your local city has regulations regarding which types can be planted. These regulations help protect the surrounding forests and ecosystems. Birch Tree Care can assist you in choosing a diverse range of plants that you love and that your local city approves.

Hiring a professional for this treatment option is suggested in order to mitigate risk and costs.

Our treatments aim to achieve the following.

• If possible, save the Ash trees presently rooted in your yard.

• Clear and remove the disease from your property and prevent further spread.

• If need be, remove Ash trees that are severely damaged and have them replaced with suitable plants.

• Protect the value of your property.

• Help you avoid potentially expensive solutions in the future by tackling the problem early.

Contact us to discuss a custom treatment plan for Emerald Ash Borer.

Identifying Emerald Ash Borer

Worried about your property being infested with EAB? Here are some ways to identify the Emerald Ash Borer and signs of disease.

You can identify an Emerald Ash Borer by looking for the following physical characteristics:

• Its body has a metallic green color

• Has a narrow, bullet-shaped body

• Is about 0.5 inches long

• Has an iridescent back and bean-shaped black eyes

Additionally, D-shaped exit holes are a key indicator of EAB presence, along with other symptoms such as canopy thinning and woodpecker damage.

Signs of EAB Infestation

First of all, you need to identify if your land contains Ash trees which are the type of trees EAB’s feed on.

To identify an Ash tree, look for the following characteristics:

1. Inspect the branches of the tree. Do the branches grow directly across from one another?

2. Next, inspect the formation of the leaves. Do you see a group of individual leaves connected to a stalk which is then joined to a woody stem (also called compound leaves)?

3. Finally, inspect the number of leaves and the texture of the edges. Does a stalk have five or more leaves connected? Also, do the leaves have smooth or finely-toothed edges (also called margins)?

If your answer is yes to all these characteristics, then you indeed have an Ash tree. Visit the Minnesota Department of Natural Resources website for more details about what specific species of Ash tree you have.

Now that you have identified your Ash tree, it’s time to inspect the tree for signs of an Emerald Ash Borer infestation.

1. Approach the tree and look upwards into the crown. Can you spot a loss of green color in the uppermost leaves? Can you also spot that there are fewer leaves than there should be (this is known as thinning or dieback of the crown)?

2. Walk around the trunk and carefully inspect the following:

• Is there stripping of bark or puncture holes in the trunk? These are the signs of woodpeckers pecking into the wood to feed on the EAB larvae.

• Do you see sprouts growing from the roots, trunk or branches of the tree?

• Do you see splits in the bark of the trunk?

• Can you identify D-Shaped holes in the trunk? These are exit holes made by the EAB.

• Do you notice S-shaped zig zags in the bark of the tree? These are known as galleries and are the signs of the EAB larvae burrowing into the trunk.

If you have inspected your Ash tree and have spotted these signs then you may be dealing with an EAB infestation. Insecticides for EAB are available at hardware stores, but improper application can harm trees or fail to resolve infestations. Professional assistance is recommended. Call us today to confirm your diagnosis and act now to save your trees.

Areas We Offer Emerald Ash Borer Treatment

Birch Tree Care offers Emerald Ash Borer treatment services in the Twin Cities of Minneapolis and St. Paul. Our Arborists have been providing disease treatment services to homeowners and commercial property managers and have close to a decade of experience.

Call us at 651-317-4080 if you need help to accurately diagnose EAB on your property and devise a custom treatment plan.

Why Choose Birch Tree Care for EAB Treatment Options

At Birch Tree Care, we'll help your ash trees thrive and flourish even if you are dealing with hazardous insects. Our honest team of technicians and arborists care deeply about your trees. We have a deep knowledge of the science and the best practices to treat Emerald Ash Borer infestations. We will work tirelessly to make sure your trees are in optimal health and that any EAB infestation is cleared effectively.

Our team is fully insured and licensed, ensuring professional care for your property. With multiple years of experience, we have treated hundreds of infested trees. Contact us and ask our staff which treatment options can keep your landscape free from Emerald Ash Borer.

Apple Scab Treatment in the Twin Cities: Complete Prevention Guide [2025]

Is your Minnesota apple tree showing signs of disease? Apple scab affects countless trees throughout Minneapolis, St. Paul, and surrounding suburbs each year. As certified arborists serving the Twin Cities for over 15 years, we've helped homeowners across Edina, Eden Prairie, and Minnetonka save their trees from this persistent fungal infection.

What Is Apple Scab? Understanding This Common Minnesota Tree Disease

Apple scab (Venturia inaequalis) is a fungal disease that primarily affects apple and crabapple trees throughout the Twin Cities region. Our unique Minnesota climate—with cool, wet springs and humid summers—creates ideal conditions for apple scab to thrive in local landscapes.

The disease not only damages the aesthetic appeal of ornamental trees but can significantly reduce fruit production and tree vigor over time. Left untreated, severe infections may weaken trees and make them susceptible to other problems common in our Minneapolis-St. Paul growing region.

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Apple Scab Lifecycle in Minnesota's Climate

Understanding how apple scab develops specifically in our Twin Cities climate is crucial for effective treatment:

• Fall/Winter (October-March): The fungus overwinters in fallen leaves around your Minneapolis or St. Paul property, waiting for spring conditions

• Early Spring (April-May): As temperatures rise to 43-75°F with rainfall (common in Minnesota springs), primary spores release and infect new growth

• Late Spring/Early Summer (May-June): Black or brown lesions appear on leaves and developing fruit

• Summer (June-August): Secondary infections spread throughout the tree and potentially to neighboring trees

• Late Summer/Fall (September-October): Infected leaves drop prematurely, completing the cycle

The prolonged wet periods we often experience in the Twin Cities metropolitan area make our region particularly susceptible to severe apple scab outbreaks.

Identifying Apple Scab on Twin Cities Trees

Before apple scab treatment, proper identification is essential. Here's what to look for in your Minneapolis, Edina, or St. Paul landscape:

• On Leaves: Olive-green to brown circular spots that eventually turn black

• Leaf Symptoms: Severe infections cause yellowing and premature leaf drop, particularly noticeable in Minnetonka and lakeside properties

• On Fruit: Circular dark lesions that may become cracked and corky

• Fruit Impact: Misshapen fruit, uneven ripening, and early fruit drop

• Timing: First visible in the Twin Cities typically by mid-May, progressing through summer

Minnesota's native crabapples are particularly susceptible, along with many popular apple varieties grown throughout the metro area.

DIY Apple Scab Prevention for Twin Cities Homeowners

While professional care offers the most reliable protection, Minneapolis-St. Paul homeowners can take these steps:

1. Fall Cleanup: Thoroughly rake and dispose of fallen leaves in Minneapolis yard waste collection (not compost)

2. Strategic Pruning: Improve air circulation through professional pruning adapted to Minnesota's growing conditions

3. Water Management: Water at ground level only, especially important in densely planted Twin Cities yards

4. Resistant Varieties: When replanting, choose scab-resistant varieties suitable for Minnesota's zone 4b climate

5. Spacing: Plant new trees with adequate spacing for our region's humidity considerations

6. Professional Consultation: Schedule an assessment with a certified Twin Cities arborist for customized recommendations

These practices are particularly important in Minneapolis and St. Paul neighborhoods with mature tree canopies that can reduce airflow.

Minnesota-Specific Treatment Options

Based on our experience throughout the Twin Cities metro area, these treatment approaches work best in our unique climate:

Organic Options for Minnesota Gardens

• Sulfur-based fungicides applied on a 7-10 day schedule (adjust for Twin Cities rainfall patterns)

• Neem oil applications for light infections

• Baking soda solutions for mild cases (less effective during heavy Minnesota spring rains)

Professional Treatments

• Targeted fungicide applications with equipment calibrated for Minnesota tree species

• Timing treatments precisely with local bud break and weather patterns

• Integrated approaches that consider Minneapolis-St. Paul microclimates

Twin Cities Neighborhoods: Special Considerations

Different areas of the Twin Cities metro face unique challenges with apple scab:

• Minneapolis Lakes Area: Higher humidity requires more aggressive prevention

• St. Paul Highland Park: Mature trees need specialized equipment for complete coverage

• Edina & Eden Prairie: Established landscapes often have multiple susceptible trees in close proximity

• Minnetonka & Western Suburbs: Larger properties may require comprehensive management plans

• Northern Suburbs: Slightly different timing due to later spring warming

Why Choose Certified Minneapolis Arborists

Our ISA-certified arborists bring specialized knowledge of Twin Cities growing conditions:

• Deep understanding of Minnesota's unique climate challenges

• Custom treatment plans based on your specific Minneapolis or St. Paul microclimate

• Proper timing based on local bud break and weather patterns

• Complete property assessment to identify all vulnerable trees

• Preventative recommendations specific to your Twin Cities landscape

Contact Your Local Twin Cities Apple Scab Experts

Don't let apple scab damage your valuable landscape trees. Our Minneapolis-based team provides specialized plant health care services throughout the metro area, including Edina, St. Paul, Eden Prairie, and Minnetonka.

Schedule your consultation today for a customized treatment plan designed specifically for your Twin Cities property.

Minnesota Winter Tree Care: Your Local Guide to Tree Protection [2025]

From Edina's mature oaks to West Metro’s towering maples, Twin Cities homeowners know the toll Minnesota winters can take on our trees. Whether you're in Eden Prairie dealing with ice storms or protecting century-old elms in St. Paul's Summit Hill, this guide will help you safeguard your trees during the harsh Minnesota winters.

Winter Tree Damage in the Twin Cities: Area-Specific Concerns

Different parts of the metro face unique challenges:

• Wayzata and Lake Minnetonka area: Lakefront wind damage

• Edina and South Minneapolis: Heavy snow accumulation on aged trees

• Plymouth and Maple Grove: Ice storm vulnerability

• Highland Park and Mac-Groveland: Historic tree preservation

• Woodbury and Eastern Suburbs: Open exposure to winter storms

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Regardless of which area you’re in, you’ll want to wait to make sure the storm has passed and that it is safe to go outside. Once you’re able to get outside, you need to understand what has been damaged. Assess the damage by asking yourself the following questions:

Are there small branches that have been damaged? 

Are larger branches damaged?

Before you go any further, it is important to make sure there are no tangled or downed power lines. It’s also important to understand if the tree is on your property or if it is the responsibility of your city. If that is the case, you’ll want to phone the city directly to advise them of the situation. 

Safe Snow and Ice Removal Techniques

Once you’ve assessed the damage and can understand how much of your tree is intact there is a natural tendency to shake the branches so that you can remove the stress on the tree from the accumulated snow or ice. Don’t do this. We can’t stress this enough. Shaking the branches may actually cause them to snap and damage the tree more seriously. 

Instead, follow these safe techniques:

• Use a pole with a rubber tip to gently push up on branches from below

• Keep a safe distance to avoid falling snow and ice

• Allow ice to melt naturally to prevent branch damage

• Clear fallen branches only after ensuring no power lines are involved

Professional Winter Tree Care Services

When winter storms cause significant damage, professional help is often necessary. Our team of certified arborists can provide:

Emergency Storm Services

• 24/7 storm damage response throughout the Twin Cities

• Hazard assessment and mitigation

• Emergency branch removal

• Structural support installation

Preventative Tree Care

• Winter pruning for storm resistance

• Crown thinning to reduce snow load

• Structural support system installation

• Health assessments and treatment plans

The goal of pruning after a storm is to minimize the amount of exposed damage. Any exposed wounds on the tree can increase the chance of pathogens or diseases infecting the tree which can cause additional problems. Pruning will help minimize the risk of any objectionable branches from failing and can eliminate any weak branch attachments. There are lots of tips on pruning but generally, this is the best time to give us a call. 

Preventative Winter Tree Care

The most effective protection for your trees is to ensure that they are healthy and well-maintained. We have a full schedule of annual pruning and care that you should be following for your tree. Proper pruning and removal create a healthy tree that can be more likely to withstand a storm successfully. Typically the best time of the year to prune your trees is during the dormant winter months. You can check out our blog here to understand the pruning schedule better.

Fall Preparation

• Schedule professional pruning before winter

• Remove dead, diseased, or weakened branches

• Assess overall tree health

• Consider cabling for vulnerable trees

Winter Monitoring

• Regular inspections during and after storms

• Prompt removal of damaged limbs

• Professional assessment of any structural concerns

• Documentation of progressive damage

When to Call the Professionals

An I.S.A. certified arborist can assess the situation and develop a recommended treatment plan for your tree. Our 24-hour storm assistance is also a great resource if trees become a danger during a storm. If this is the case, call us as soon as possible so we can send a team to your house and ensure that any damage is minimized. We have specialized equipment (such as lifts) and training to minimize the risk of accessing damaged trees. We also can provide steel or dynamic bracing for damaged trees and crown raising, which will provide clearance for buildings and homes from any limbs that are carrying extra weight from snow or ice. 

Recovery and Long-term Care of Trees

Concerned customers generally ask us what the likelihood is for a tree to recover from any damage and while the answer varies case-by-case, a good measurement is if the tree’s central leader is intact, and still has at least 50 percent of its crown, the tree will likely recover. 

Needlecast Disease: A Guide to Protecting Your Evergreens

Ever noticed your evergreen trees looking a little sparse or dropping needles prematurely? These signs could point to needlecast disease—a common but often misunderstood issue that can take a toll on your trees if left unchecked. 

Needlecast can quietly devastate your evergreens, leaving them weak, unsightly, and vulnerable. If you've noticed thinning foliage or discolored needles on your pines, spruces, or firs, it's time to take action. At Birch Tree Care, we believe that informed care is the first step to preserving the health and beauty of your landscape. That’s why we’ve put together this this guide to help you identify, treat, and prevent needlecast disease in your evergreens.

What Is Needlecast Disease?

Needlecast is a fungal disease that primarily affects conifers. It gets its name from the way infected needles turn brown or yellow and eventually fall off the tree, creating a “cast” of needles on the ground below. While it starts as more of an appearance issue, if left untreated, it can weaken the tree and even lead to death over time.

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Symptoms Of Needlecast 

Spotting and identifying needlecast early on is very important when it comes to preventing long-term damage to your trees. Here’s what you should look out for:

#1 Discolored needles

Needles may turn yellow, reddish-brown, or brown, typically starting at the base of the tree and moving upward. This discoloration often occurs before the needles are shed.

#2 Premature needle drop

Infected needles fall off earlier than healthy ones, leaving branches bare and vulnerable. This is often one of the earliest and most noticeable signs.

#3 Visible fungal signs

Look closely at the needles, especially on the underside. You may spot tiny black or dark brown dots, which are fungal fruiting bodies releasing spores.

#4 Thinning canopy

As needlecast progresses, the tree’s foliage becomes noticeably sparse, particularly on the lower branches where the disease tends to take hold first. This thinning can give the tree an unbalanced or unhealthy appearance.

Spotting these symptoms early allows you to take action before the disease spreads further.

Common Causes and Spread

Needlecast disease is caused by fungi such as Rhizosphaera or Lophodermium. The fungi thrive in wet, humid conditions and spread through:

• Wind and rain: Spores are easily carried to nearby trees.

• Infected plant material: Fallen needles can harbor the fungus, spreading it to the soil and other trees.

• Improper spacing: Trees planted too close together are more susceptible due to limited air circulation.

How to Treat Needlecast Disease

If your trees are already showing signs of needlecast, don’t panic. Here are the steps to manage and treat the disease:

1. Prune affected branches: Remove infected branches to stop the spread of the fungus. Be sure to dispose of pruned material carefully to prevent contamination.

2. Apply fungicide: Use a fungicide specifically designed for needlecast. Apply in the spring when new needles emerge, and repeat as needed throughout the growing season. Did you know that our team of experienced plant health care experts provide professional-grade treatments for Needlecast? Contact us today for a free quote.

3. Improve air circulation: Thin out surrounding vegetation to increase airflow and reduce humidity around the tree. Our arborists can help assess your landscape and recommend adjustments.

4. Remove fallen needles: Regularly rake and dispose of infected needles to prevent the fungus from spreading. Proper disposal is important to minimize further contamination.

5. Consult an arborist: Severe infections may require professional evaluation and treatment. Our team of certified arborists at Birch Tree Care can diagnose the severity of the disease and provide custom solutions to restore your tree’s health.

Our team understands that every tree and property is unique. Whether it’s creating a treatment plan or applying fungicides, we’re here to support you at every step.

Preventing Needlecast Disease

When it comes to protecting your evergreens, prevention is your best bet. Start by choosing species like Norway spruce, which are naturally more resistant to needlecast. Make sure your trees have enough space to breathe—good air circulation can work wonders in keeping fungi at bay. Avoid overhead watering, as it creates the kind of moist environment fungi thrive in. 

Additionally, regular upkeep, like pruning dead branches and keeping the area under your trees clean, goes a long way in creating a healthier environment. Finally, don’t skip inspections; keeping an eye out for early symptoms, especially during wet seasons, can save you a lot of trouble later.

At Birch Tree Care, we make prevention simple. Our services include routine inspections, strategic pruning, and custom tree care plans to ensure your evergreens remain healthy and resilient all year round. Let us help you take the guesswork out of tree care so you can enjoy a thriving garden. 

How Birch Tree Care Can Help

At Birch Tree Care, we specialize in diagnosing and treating tree diseases, including needlecast. Our services include routine inspections, strategic pruning, and custom tree care plans to ensure your evergreens remain healthy and resilient all year round. 

If you choose to work with us, our arborists will:

• Perform thorough inspections to identify needlecast and other issues.

• Develop a customized treatment plan for your trees.

• Apply professional-grade fungicides for effective disease control.

• Provide ongoing care to ensure your trees stay healthy year-round.

Don’t let needlecast take over your evergreens. Contact us today for professional advice and treatment options. For more insights on maintaining tree health through every season, explore our blog on How to Winterize Your Trees and Storm Damage Recovery Tips.