‘I have some weird, seemingly hollow, green, round balls falling from my oak tree. What in the world are these things?” — S.Y. You are describing an interesting growth that can occur on a ...

Can you identify and suggest next steps? A : It appears your tree has several galls that have formed on the branches. Galls are formed by excessive cell division in response to bacteria ...

Galls are abnormal growths on a part of the plant. They can be caused by bacteria, insects, mites and fungi. They can be on any part of a plant and are the overgrowth of plant tissue in response ...

Twig galls are not regarded as a serious pest of trees, but do result in localized twig and branch dieback that may appear alarming. There are many types of twig galls and galls are also found on ...

Gall wasps are a stingless species that create galls on trees and bushes where they grow from larvae into adulthood. So, now we know they won't hurt us, but are those bulbous tumor-like balls on ...

Does your pin oak look like it’s breaking out in little bumps Those odd, round growths are called twig galls, and they’re ...

The tree is useful in wet areas ... The leaf stalk shrivels, turns black, and the leaf blade falls off. Gall mites stimulate the formation of growths or galls on the leaves.

What causes this and can trees be treated to prevent this? A: The condition you describe sounds like a leaf gall, which is an ...

You could spot one or two, then dozens around the same tree. Oak galls are the result of gall wasps. Inside the galls are the insect's eggs and larvae. When the eggs are first laid, the galls will ...

The presence of galls on the foliage of trees is fairly common and the damage is mostly aestheticand rarely causes long-term harm to the health of affected trees, particularly mature trees ...