tree leaves curling up

Why Are Your Tree’s Leaves Curling Up in Holliston, MA?

Do the trees in your yard look odd? Is there something not quite right with the leaves? 

When one or two leaves curl up, it’s easy to overlook them. But when several branches, or most of the tree, have leaves that appear crinkled, shriveled, and unhappy, your curiosity can turn into alarm. 

If you’re scratching your head wondering, “Why are my tree leaves curling up?”, professional tree services in Holliston, MA, have the answer. Chances are, it’s one of the following issues.

tree leaves curling up

Leaf Curl Disease

While leaf curl disease is notorious for attacking peach trees, other fruit-bearing species are also vulnerable to this condition. A fungal infection, it causes red, twisted leaves early in the season, which often fall off prematurely. 

Leaf curl disease thrives in cool, wet spring weather (I.e., the kind of weather Holliston experiences from March through May). Applying a fungicide spray in late fall or early spring can help prevent the fungus from taking hold and damaging your trees.

Pest Infestation

If pests like aphids, scale insects, and leafrollers are making a meal out of your tree and sucking the sap out of the leaves, the leaves will curl up, change color, and die. If you spot sticky residue (called honeydew), tiny webs, or clusters of insects in the tree, it’s time to take action. Insecticidal soap or horticultural oil can help, but you might want to call in a pro for bigger pest infestations.

Environmental Stress

Massachusetts weather can be temperamental. A sudden cold snap during an otherwise balmy spring or an early summer heatwave can stress trees, especially young or newly planted ones. Curling leaves tell you they’re stressed, and the best thing you can do is offer consistent care by mulching, watering, and shielding your trees from harsh winds when possible.

Water Imbalance

Too much or too little water can also cause tree leaves to curl up. It seems simple, but watering trees isn’t always as straightforward as it looks. Overwatering can suffocate roots, while underwatering leaves them thirsty. 

Either way, the leaves may curl up in protest when a tree doesn’t get the perfect amount of water. To determine whether your trees need a drink, check the soil a few inches down at the base of the tree. If it feels either soggy or bone dry, adjust your watering habits accordingly.

Nutrient Deficiency

Trees require a balanced diet, and a deficiency in essential nutrients, such as potassium or magnesium, can lead to leaf curling, yellowing, or stunted growth. A professional soil test eliminates the guesswork and tells you exactly what your tree is missing so you can feed it the right mix of fertilizers. 

Keep Your Trees Healthy With Help From Brooke Tree Service

If you see tree leaves curling up or signs of a dying tree in your Holliston, MA, yard, don’t panic. Reach out to Brooke Tree Service at (508) 613-5044 for a diagnosis and treatment options that will keep your trees looking their best with healthy, green, and uncurled leaves. 

why are my tree leaves turning yellow

Common Causes of Yellowing Tree Leaves in Millis, MA

Massachusetts property owners are proud of the amazing spectrum of autumn colors we enjoy in New England. However, prematurely yellowing leaves on trees can be a troubling sign. 

Why are my tree leaves turning yellow?

That’s a question we receive during the growing season often at Brooke Tree Service. As the leading provider of professional tree services in Millis, MA, we share the following information about the reasons property owners notice leaves that are having trouble.  

why are my tree leaves turning yellow

Improper Watering

Overwatering can lead to waterlogged soil. That suffocates tree roots and interrupts efficient oxygen absorption. In turn, this leads to stressed trees with yellowing leaves and leaf drop well before autumn.

On the other hand, underwatering chokes off essential moisture, resulting in drought stress. In addition to yellowing, look out for leaves that curl or wilt. Test the soil above the roots with a screwdriver to determine if it feels compacted or excessively dry. Deep watering that focuses directly on the tree’s drip zone, can mitigate dehydration.

Nutrient Deficiency

Trees require balanced nutrition to maintain their vibrant green foliage. Common problems include:

  • Nitrogen deficiency. This causes older leaves to turn yellow first, leaving newer growth green.  
  • Magnesium deficiency. This causes early leaf drop and deeper yellowing between veins. 
  • Iron deficiency (chlorosis). Excessively high soil pH or compacted soil limits iron availability. Look for green veins inside yellowing leaf tissue.

Soil tests can pinpoint specific deficiencies that support targeted treatments like fertilizer application or soil amendments.

Pests

Infestations by sap-sucking insects or other pests weaken trees and cause yellowing. Common Massachusetts pests include:

  • Aphids and scale Insects. These pests extract nutrients, leaving behind yellow, curled leaves.
  • Spider mites. Infestations create a stippled, yellow leaf discoloration.

Prompt expert treatment with insecticidal soaps or introducing natural predators can help restore tree health.

Diseases

Why are my tree leaves turning yellow? Our region sees some common tree diseases that  cause discoloration:

  • Fungal infections. Anthracnose and powdery mildew cause yellowing by disrupting nutrient uptake and photosynthesis.
  • Bacterial pathogens. Invasive microorganisms cause wilting and leaf spotting in addition to yellowing.  

Arborists treat diseases through proper pruning, improving air circulation, and applying fungicides as needed.

Environmental Stress

Environmental factors can heavily impact tree health, contributing to leaf discoloration:

  • Soil pH imbalance. Out-of-range acidity hinders nutrient absorption at the root zone.   
  • Compacted soil. Damaged topsoil impairs root growth, water flow, and nutrient uptake.
  • Temperature extremes. Large, sudden weather changes stress trees and cause yellowing leaves.

Arborists often amend soil with organic matter or mulch to alleviate compaction and improve soil conditions.

Call On Brooke Tree Service for Expert Arborist Services

Why are my tree leaves turning yellow? As we’ve discussed, yellowing leaves are a symptom of underlying health issues. Brooke Tree Service specializes in diagnosing and resolving tree health issues.  

Take a look at our other posts for coverage of other common Massachusetts tree health topics, like understanding the reasons the top half of a tree has no leaves

Contact Brooke Tree Service today at (508) 613-5044 for all your tree care needs.