Grapefruit Trees
Q.

I have a growth on trees and I can’t identify it?

Zone Peoria, 85383 | srdelcarlo added on September 20, 2019 | Answered

The growth is on my grapefruit tree, orange tree, cactus claw and oleanders. I live in Phoenix Arizona

A.
A.Answers to this queston: Add Answer
BushDoctor
Certified GKH Gardening Expert
Answered on September 23, 2019

Those are galls! They are caused by fungal and bacterial infections, specifically spread by insects. They won't cause serious issue to the tree, but you may want to remove as many as possible in order to allow the trees to be as productive as they can. You will also want to treat with insecticides to prevent the issue.

These articles will help: https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm

https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm

https://www.gardeningknowhow.com/category/edible/fruits/citrus

https://www.gardeningknowhow.com/category/ornamental/cacti-succulents/scgen

https://www.gardeningknowhow.com/.../oleander/oleander-growing-tips.htm

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