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How to Eliminate Tree Fungus

By Alicia Bodine ; Updated September 21, 2017
Trees can become infected with fungus.
tree image by kuhar from <a href='http://www.fotolia.com'>Fotolia.com</a>

There are many different types of diseases that can infect your tree. Some of these diseases are caused by a fungus. North Dakota State University lists Verticillium alboatrum and sooty mold fungi as two types of fungus that commonly infect trees. If you find that your trees are infected with a fungus, you will need to treat them before the fungus has a chance to spread.

Purchase a fungicide with the active ingredient captan. This fungicide is used to treat a variety of fungal diseases in trees and shrubs.

Take proper safety precautions. You will need to wear a long-sleeved shirt, long pants, shoes and socks, waterproof gloves and goggles. Fungicides are harsh chemicals that can cause skin irritations, damage to the eye and allergic reactions.

Mix 4 lbs. of captan fungicide with 20 gallons of water. If your spray tank doesn&#039;t hold 20 gallons of water, you can mix 2 lbs. of fungicide with 10 gallons of water, or 1 lb. of fungicide with 5 gallons of water.

Spray the fungicide directly on your tree&#039;s leaves and trunk. Cover every area where you see the fungus.

Repeat every two weeks until the fungus has cleared up.


Things You Will Need

  • Long-sleeved shirt
  • Long pants
  • Shoes and socks
  • Waterproof gloves
  • Goggles
  • Fungicide
  • Water
  • Spray tank


  • Keep pets and children away from the tree after it is treated until the fungicide has dried completely.


  • If you have an emergency while using a product containing captan call 1-800-327-8633.

About the Author


Alicia Bodine has been a professional writer for 13 years. She has produced thousands of articles for online publications such as Demand Studios, GoBankingRates and WiseGeek. Bodine is passionate about gardening, travel, education and finance. She has received awards for being a top content producer.