Maple galls One of the most common galls found in landscape trees is Maple bladder gall, caused by a mite that overwinters on the bark of maple trees, particularly Silver Maple.

Q • My oak trees have more large galls than I’ve ever seen on them, and I’m worried about their health. What can I do about ...

Some cherry and plum trees in the central Ohio area are turning black from a fungal disease. Here's what you need to know.

Galls are the result of an interesting association between a plant host and a gall maker. Gall makers include insects, mites, bacterium, fungus and nematodes, but most are caused by mites and insects.

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, fungi, insects or environmental stress.

Maple galls One of the most common galls found in landscape trees is Maple bladder gall, caused by a mite that overwinters on the bark of maple trees, particularly Silver Maple.

In heavily affected areas, up to 30% of beech trees are killed within seven years of contracting beech leaf disease.

However, some trees develop dozens to many hundreds of galls and the loss of all those twigs is not trivial. On blue spruces, it has been noted that adelgids preferentially gall the greener trees, ...

Galls are structures made up of plant tissue, forming in response to the saliva of mites or small insects as they feed. The number and variety of galls found on trees in our landscapes are closely ...

If your cedars are showing signs of disease, you'll need to identify the issue to appropriately treat it. Learn about some of the most common cedar illnesses.