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Our knowledgeable staff here at Garden-Ville are available to answer many of the questions you might have about gardens, landscaping, and trees. Many problems with plants, however, cannot be responsibly diagnosed other than in person. We're located in central Texas and may not be familiar with the details of gardening in very different climate or soil zones. One of the guiding principles of organic growing is adapting methods to the particularites of local soil and climate. With that in mind we'll do our best to answer your question, but if we can't we'll be happy to help you find the appropriate resources or professionals in your area.
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I have several wateroak trees in my front yard that to me are expressing some type of fungus. The leaves are turning brown in approx. 10 to 30 percent of the tree, which appears to be dead. The limbs are still alive. I bought off the self fungus liquids and sprayed as directed. The still appear to be sick looking. Can you recommend any product that I can try? The Trees are from 5 to 11 years old and 15 to 20 ft. tall. Approx. 8 watertrees total. Thank you, Don Summers
12/19/20079:40:26 AM Link 0 comments | Add comment
Potassium Bicarbonate, Tree Questions
Don,From what you have described it sounds like you may have oak wilt, http://plantpathology.tamu.edu/Texlab/oakwilt.html this website from Texas A&M University has photos and a short questionnaire that will help determine if you have oak wilt or not. If you do have oak wilt you will need to treat the root system with a systemic fungicide. Two common organic fungicides are horticultural corn meal and potassium bicarbonate, which can be mixed with water and sprayed around the trees. The website link also has an address where you can send off samples of the tree to see if the fungus is in the tree.
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