Leaf infections called "galls" are bumps or growths caused as a result of the feeding and other activity of insects or mites. Powerful growth regulating chemicals produced by feeding insects or mites cause galls can occur on leaves, bark, flowers, buds, acorns, or roots. Although these galls may look like a serious problem, most are harmless to the overall health of the tree.
Gall on Oak Leaf, About Forestry Forum Photo
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I have a wounded tree trunk on our birch . It was hit by a lawnmower and the inside bark is exposed. What is the best way to treat it?
Thank you,
Tracey
i have a japanese maple of large size and beauty,how can i collect and propigate seeds to grow more of these beautiful trees,my buddy says leave buckets of dirt under tree,but it doesnt seem to be working.what can i do?im not sure what part of the country you live in,but i could only hope i could help to answer a question for you too someday, and thank you very much in advance
In some cases galls/psyllids may severely restrict growth. Eg
Alstonia scholars trees in north india. Planting such trees may be inadvisable.
My client has a Hammellis vernis (witch hazel). It was planted last year under an oak tree. The witch hazel developed nipple gall this summer and dropped all it’s leaves. Is the tree dead. Should I remove it?
Greetings
I have few pics of Galls on the Oudamber Tree -leaf “Ficus Moracea taken in this year -I can post to you -kindly advise address or if you give an email id it will be easier-
The Galls -lumps looked like Bubbles. I got a few close up pica s it is in my Temple Tree .
Wasp activity is mentioned in nature sources-
neem oil treatment was advised.
rgds
CaptTR