Expert Tree Care from Certified Arborists in St Charles, Naperville, Downers Grove and Surrounding Areas!

Tar Spot Fungus on Maple Trees

Tar Spot Fungus Treatment for Maple Trees in Winfield and Surrounding Areas

Tar Spot is a fungal disease that affects the leaves of certain varieties of Maple Trees and we have an excellent treatment program to deal with it!

The fungus that causes Tar Spot travels to Maple trees as a microscopic windblown spore. The infection appears in late Spring as pale yellow leaf spots that grow and continue to darken as Summer progresses. At this point these yellow spots morph into larger black circles that resemble a series of cigar burns on the leaf.

As the disease continues to accelerate these large black spots become visibly lighter but the leaf tissue all around them dries, leaving the leaves with a dried out, burned appearance that start falling from the tree. This occurs well before the Fall, littering lawns and leaving the tree with a thin, droopy canopy.

Tar Spot is ‘rarely’ serious enough to threaten the overall health of a tree but the leaves can become so infected year to year that homeowners contact us, to correct the unsightly appearance. In addition, when the leaves of the tree distort and dry out as shown in the third photo homeowners really miss the reason we all love Maple trees…There will be no brilliant ‘Fall Color’ display.


Treatment requires three perfectly timed spray applications in the Spring with high quality fungicidal products.

Clients often ask..if we treat our tree and our neighbors do not, will your treatment still work?


We have situations where our clients Maple branches are actually intermingled with their neighbors Maple over the fence, both of which suffered with the Tar Spot the previous year. Our clients tree will be perfect while the neighbors tree is once again infected. Our treatment results are amazing.

Experience the Tree Green Difference

At Tree Green, we don’t just care for trees; we care for people. Our approach melds hassle-free scheduling with prompt response times, so you can rest assured your time—and your trees—are highly valued. But what truly sets us apart is our blend of 1950s-style customer service with modern arboricultural expertise; it’s where time-honored values meet cutting-edge science.

We’re fully committed to exceeding your expectations at every step. Our certified arborists not only offer you the best tree care solutions but also extend the utmost respect to your property. In a world where customer service often falls by the wayside, we’re raising the bar, one satisfied customer and healthy tree at a time.