Oaks are the most susceptible having the most species of gall-forming insects and mites being able to take advantage of them. Oak galls may form on the branches or the leaves Maples commonly have ...

Some of the most common galls form on oak trees. Of the 2,000 insect species that stimulate gall formation, at least 800 of them use oaks as their host. The photo I received (and is pictured here ...

systemic insecticides that are transported inside the plant are not very effective in killing the gall-forming insects while they are feeding. Also, since the gall tissue is different from the ...

Answer. You have spotted the handy work of quite small insects or mites. Oaks, especially the live oaks, seem to be susceptible to a number of gall-forming insects that produce swollen tree ...

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 ...

The galls expanded, and in this case, changed color to make room for all the creepy crawlies. “The gall-forming insects are really interesting because they have a symbiotic relationship with the plant ...

Galls are outgrowths induced on plants by other organisms. In some instances, they form when parasitic insects like midges, moths and wasps release substances that prompt the plant to produce more ...

What causes them – insect, fungus? How should I treat ... Affected trees ordinarily show little injury and once the gall begins to form the process cannot be stopped. Treatment is not ...

After hatching, larvae burrow further into the bark to begin feeding, triggering the twigs they are in to form the telltale ...