Saturday, August 18, 2012

Do you know what the most destructive oak tree disease is?

It's oak wilt!

Oak wilt is the most destructive disease of oaks in the upper Mississippi Valley. It also occurs throughout most of the South and can kill oaks rapidly, causing heavy losses. Red oaks are affected more frequently and severely than white oaks.

The fungus associated with oak wilt can be identified in the field by the presence of fungal mats which form cushions under the bark of infected trees. However, these fungal mats are infrequently found in the South. Identification can also be made by observing laboratory isolates of the fungus.
Symptoms of oak wilt include bronzing or browning of green leaves from tips and margins downward toward the leaf base, premature defoliation, and eventually death of the tree. The red oaks develop symptoms over the entire crown shortly after infection, but white oaks develop symptoms slowly, a few limbs at a time.

The wilt fungus is favored by moderate temperatures. It spreads from infected to noninfected trees through root grafts. In addition, insects can carry spores of the fungus over long distances.

To try to manage oak wilt, if in a forest, kill infected trees with silvicides to reduce inoculum and prevent root graft transmission of the disease. If in urban areas, sanitation by removing infected trees and trenching to eliminate root grafts will minimize the losses.


If you are concerned about your trees for any reason, please contact Trees "R" Us, Inc.  Trees "R" Us, Inc. has 4 certified arborists in their plant health care division that are well trained on how to give your trees and plants the proper care they need.  Contact us for an analysis of your trees and plants.

Trees "R " Us, Inc. is proud to educate our communities on proper tree care and maintenance.

It is through education that we really save trees and help the environment.  We hope you found this post informative and educational. 
Trees "R" Us, Inc. is a professional tree service for the Chicago's North Shore, North and Northwest suburbs.  Tree trimming, tree removal, stump grinding, fertilizations, tree disease treatments and prevention as well as plant health care are just a few of our high quality, professional services.  Contact us today for a free analysis or quote at www.treesrusinc.com or at 847-913-9069.
Thanks for reading,
Nick

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