Question
I noticed that someone posted a question on the above subject, but the answer didn't include a method to remove the unsightly thing. Can removal be accomplished successfully and if so, how? It continues to grow larger and is the size of a peach on one leg of a braided stem tree about 6 feet tall. The tree is healthy, otherwise. I have let the tree enjoy the hot outdoors this summer and it has prospered. In moving it back indoors, what precautions should I take to remove insects which may have attached themselves and can an insecticide be applied in hot weather?

Answer
Hi Guy,

The gall is caused by a bacterial or fungal infection. Sometimes the cause of the gall will have other negative effects on the tree. Most of the time, it has no effect. There is no "cure" for gall.

If it is only one branch that has the gall and appears to be dying, you can prune off that branch, including the gall. Disinfect your pruners after cutting the infected branch. The rest of the tree is probably OK, but you can never be sure. If the rest of the tree starts to die back, then you will have to discard the tree.

Before you move your tree back inside as temps drop below 50 degrees, spray it down with a strong hose spray. This will knock off any outdoor critters that you don't want in the house. To remove soil critters, plunge the pot up to its rim in a tub of plain water and let it sit for 30 minutes. The flood will drive any soil pests up and out in search of air. The use of pesticides should not be necessary.

Please let me know if any of this is unclear or if you have any additional questions. If you would like to e-mail some photos to my address below, I may be able to provide some additional insights.

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Regards,
Will Creed, Interior Landscaper
Horticultural Help, NYC

You can E-mail me directly at: [email protected]