What Is Wrong With My Tree? Jumping Oak Galls

Jumping Oak Galls Are Wasp Eggs

pest managementYes! Jumping oak galls are wasp eggs. Female wasps lay their eggs on the underside of leaves in the late spring, which lead to the development of round disks. These disks contain one wasp larvae. They are called jumping oak galls because they are known to jump much like a Mexican jumping bean when they fall. After the leaf has fallen, the larvae will overwinter in the soil.

What Trees And Shrubs Are Affected By Jumping Oak Gall?

White oaks and other oaks in the white oak group are the primary host trees for jumping oak gall. In healthy white oaks, jumping oak gall is rarely fatal. In trees that are already stressed, defoliation may prove detrimental to the tree’s health.

What Are The Symptoms Of Jumping Oak Gall?

Early symptoms of a jumping oak gall infestation are browning leaves in the late spring. Leaves can curl, die back, and fall to the ground. These leaves’ underside will show the gall’s presence, which appears as little brown spots with a yellow halo.

What Are The Treatments For Jumping Oak Gall?

Jumping oak gall can be prevented and treated through good garden sanitation and tree health care. Mulching, watering, fertilizing, and avoiding injuries to the tree will keep it healthy enough to weather the stresses of jumping oak gall.

When leaves have fallen, rake them up and dispose of them to prevent the spread of diseases and pests. When done, sanitize all tools after use.

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