With all of the recent rainfall, there are both positive and negative impacts on our local trees.
Excessive moisture may result in the presence of different types of fungal diseases, the question is, will it hurt your tree?
The most common fungal issues are the least dangerous, such as powdery mildew, tar spot, or apple scab. You will see white, powdery substances, black spots (especially on maples) or brown spots on the upper surface of leaves. In most cases, increased sun exposure and air circulation will help prevent these; however, they are not very serious and rarely have a lasting impact on the health of the tree.
On the opposite end are the serious fungal or bacterial disease which can cause dieback in twigs, branches or the entire tree, such as Anthracnose, heavily affects dogwood trees. Verticillium wilt is a soil-borne disease that thrives in drought-like conditions and affects 100s of species. Â
Best solutions for these issues are to practice sanitation when pruning, leaf removal, or possible treatment.
Oak wilt is the newest addition to our area and has unfortunately been identified in Monroe County. This is a very serious problem for Red Oaks specifically. Please alert the DEC if you think you’ve spotted it.
More info here:
https://dec.ny.gov/nature/
The good news is: there are more fungal diseases causing blemishes or leaf drop, but they usually are not going to impact the long-term health of your plants. Here’s a full list as a resource from Cornell. https://plantclinic.cornell.
What can we do to help our trees now?
Heavy rainfall can saturate the soil surrounding the root zone of our trees, which depletes the air and nutrients in our soils. Some tree species will show chlorosis in their leaves, which is a sign of an iron deficiency. Pin and white oaks, flowering dogwood, red and silver maples, and birch are all examples of them.
A tree root aeration with the additional feeding of the required nutrients with compost and acidifier will show an obvious greening of those yellow leaves.
The Susan B. Anthony 19th Amendment Festival celebrates civic engagement, women’s history, and neighborhood unity, with this year’s theme honoring Creative Women. As a woman-owned business in Rochester, Susan B. Anthony’s fight for equality paved the way for women like us to lead, build, and grow businesses of our own.
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Susan B. Anthony Square Park, 39 King Street, Rochester, NY
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