How to Treat Anthracnose in a Sycamore Tree


The sycamore is one of the most common trees grown in North American landscapes; yet, the stately tree can succumb to a fungal disease, anthracnose, causing it to lose its appeal. Anthracnose often attacks sycamore trees in the spring, quickly wilting new leaves that are emerging. Twigs and branches of sycamore trees are also affected by the disease, developing cankers which will produce spores the next spring and re-infect a tree. The weather plays a large role in determining the severity of the disease, as anthracnose rampantly develops under wet conditions where the temperature does not reach above 55 degrees. With diligence, however, anthracnose can be treated.

Step 1

Apply a fungicidal spray in the early spring when buds begin to swell. If a period of rain occurs following the application, it may be necessary to re-treat for the next one to two weeks.

Step 2

Collect and dispose of fallen leaves and twigs.

Step 3

Use pruning shears to prune any infected twigs that remain on the tree. Discard the twigs.

Step 4

Continue a watering regimen throughout the winter (in the absence of snow) to prevent the likelihood of a tree becoming infected. Sycamore trees can be weakened in the winter, increasing their risk of disease.

Tips and Warnings

  • Look for the proper symptoms of anthracnose, as it is sometimes confused with frost damage. Do not mistake the natural fuzziness of sycamore leaves for the fungal disease. Clean the pruning shears after use to avoid contaminating other garden specimens.

Things You'll Need

  • Fungicidal spray
  • Pruning shears


  • Sycamore Anthracnose
Keywords: treating anthracnose in sycamores, anthracnose and sycamore trees, how to treat anthracnose in sycamore trees

About this Author

Stephanie D. Green is a freelance writer with over 10 years of experience. Green holds a Bachelor of Arts degree in English and enjoys writing parenting, gardening and human interest articles. Her work has been published in lifestyle and trade publications including Draft Magazine and Savannah Magazine.