April Showers Bring May Fungal Diseases

anthracnose on dogwood leaf disease

Anthracnose on Dogwood

Spring time is the mark of new beginnings and growth. Not all growth is welcome especially fungal diseases that may destroy your trees.

The cool moist weather of early spring days, like the weather the DC Metro area has been experiencing this spring, creates the perfect breeding ground for leaf diseases. A leaf damaging fungal disease known as Anthracnose will soon be sprouting its spores on buds, leaves, and branches. The infection starts early in the spring which means you must act now to reduce the spread and deterioration of your foliage. Anthracnose most commonly attacks oaks, maples, and dogwoods and is spread through the spores from infected trees being carried to other trees by the wind or rain.

Other Common Fungal Diseases In Our Area Include:


  • Irregular patches of brown and black discoloration on leaf
  • Black pimples
  • Blotches along leaf vein
  • Cankers on the twigs and branches
  • Distorted areas on leaves
  • Early leaf drop
  • Discoloration of bark/trunk


Preventative treatment is best to keep your tree healthy and protected from spring fungal diseases. However, if your tree or shrub is already suffering from a fungal disease a Certified Arborist can help restore your tree’s health through specialized applications of fungicides and other overall health treatments.

To help prevent disease spread, rake up the fallen leaves each year but the best way to prevent your trees from infection in the future is with preventative treatment. If you are a Canopy Protection Program member you won’t need to worry, your Arborist includes this with your annual program. Want to get your own customized Canopy Protection Program? Or think your tree may have a fungal disease? Book a consultation online or call 703.573.3029 today.


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Samantha Huff

Samantha Huff is the marketing coordinator at RTEC Treecare. She enjoys learning about the technical aspects of trees and the insects and diseases that prey on them. She hopes that these articles can help homeowners gain control of their tree and shrub maintenance by being aware of the signs and symptoms of unhealthy trees.

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