A gall is an abnormal growth or swelling of a plant caused by hormones released from insects, mites, bacteria, or nematodes. They can appear on any part of the plant with vast variation in morphology, ...

Your description suggests your shrub has galls. Insect and mite galls are common on trees and shrubs throughout the Chicago area and generally are nothing to be concerned about. Leaf galls rarely ...

Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

The appearance of unusual lumps, bumps or swellings on the leaves, stems, branches or roots of garden plants can be alarming. These abnormal growths of plant tissue are often identified as galls. They ...

Other oak species are also apparently appealing to gall-making insects (and arachnids like mites), and there’s no shortage of types of gall, some of which you may have heard called “oak apples.” Iron ...

Insect-induced galls are highly specialised plant structures that result from the intimate interaction between galling agents and their host tissues. These extended phenotypes arise when insects ...

Alias: Maple bladder gall mite. This insect is very rarely seen, but its effects are common among maple trees. It is a small mite that feeds on the underside of maple leaves, and develops a bright red ...

You’re admiring the stalwart limbs and sculpted leaves of your handsome oak tree, and suddenly you see them: warty bulges clustered along the branches like bunches of freaky grapes. There’s no need to ...

Indiana trees are now suspected to be home to the oak gall mite, a parasite on a parasite. The oak gall mite, formally known as Pyemotes herfsi, is a nuisance in Nebraska, Kansas and Colorado and has ...

Insects can reprogram plant growth, transforming ordinary plant parts into intricately patterned shelters that are safe havens for feeding and reproduction. These structures, called galls, have ...