White Grubs in the Garden

Written by tracy hodge
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White Grubs in the Garden
White grubs often feed on garden vegetables. (Jupiterimages/Photos.com/Getty Images)

Gardeners often find insects feeding on their vegetable crops. White grubs are common garden pests. These insects pupate as larvae underneath garden soil and emerge as beetles.

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Identification

White grubs are medium-sized, C-shaped worms with dark-coloured heads. Grubs vary in size, ranging from ¼ to 2½ inches in length. These insects have wide front legs, which are used for digging in soil. White grubs lay their eggs in the soil, where the eggs remain until the larvae hatch.

Effects

White grubs feed on the roots of garden plants and cause significant damage by tunnelling in root zones. Garden plant damage often occurs with as few as three grubs per square foot. Large numbers of grubs can seriously damage plants, turf grass and vegetables.

Control

Preparing garden soil before planting can help reduce white grubs. Several animals, including skunks, raccoons, and birds, feed on grubs, which helps control their numbers. Applying insecticides in granulated form may control white grub populations, as well.

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