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Tag: wasp

Wool Sower Gall

Wool Sower Gall

Galls are formed when a plant is stimulated to develop irregular growths, caused by growth regulating chemicals produced by some insects or mites, or in some cases a fungus. Examples of galls include cedar apple rust and oak apple gall. These growths can occur on any part of the plant, including the leaves, bark, flowers, buds, acorns, or roots, however leaf and twig galls are often the most noticeable. In the case of an insect induced gall, the irregular growth…

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Oak apple gall

Oak apple gall

This time of year, with the leaves still absent, it’s hard not to notice the tan spheres attached to the ends of some oak branches.  These ball-like objects are oak apple galls, and can range in size from 1 to 2 inches in diameter (approximately golf ball sized).  A “gall” is a general term for a plant deformity caused by an insect or a fungus.  These oak apple galls are caused by gall wasps in the family Cynipidae. Female wasps…

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