Raspberry beetles

Water well in dry weather. In early summer, mulch to at least 3 ft (1 m) around the plant with straw or hay to help the soil retain moisture. Netting against birds may be needed. Raspberry beetle grubs (see p.311) may also be found in the fruits of these berries. 

Hoeing gently round the canes in winter helps to expose overwintering pests, such as the raspberry beetle, so that birds can get at them. 

Fruit infested with slender white grubs. Cause Raspberry fruitworms. These A" larvae feed in ripening fruit and may cause berries to drop prematurely. Adults are V32", brown beetles that feed on flowers and leaves before laying eggs on fruit. Collect and destroy worm-infested fruit to prevent larvae from dropping to the ground and overwintering. Spray plants with pyrethrin as blossom buds appear,... 

Leaves skeletonized. Causes Raspberry sawfly larvae Japanese beetles raspberry fruitworm beetles. The prickly, pale green, V2" larvae of raspberry sawflies usually cluster on leaf undersides. They feed on leaves for up to 2 weeks before descending to the ground, where they pupate and emerge the following spring as adult sawflies. For heavy infestations, handpick larvae or spray with BTK. Or apply pyrethrin sprays. 

If Japanese beetles are a consistent problem in your area, avoid planting raspberry cultivars particularly attractive to these pests. Cultivars to avoid include Fall Gold , Festival , Heritage, Latham , Newburgh , Reveille , Ruby , and Skeena . In the future, gardeners may be able to buy parasitic nematodes that can be applied to the soil to control the grub stage of this pest. 

Raspberry fruitworm beetles also chew leaves into a lacy pattern. For more information, see Fruit infested with slender white grubs on page 197. 

Raspberry crown borers, 199,291 Raspberry fruitworm beetles, 198-99 Raspberry fruitworms, 197-98,197 Raspberry horntails, 199-200 Raspberry leaf spot, 198 Raspberry sawflies, 198 Rats, avocado and, 31 Record keeping, 8,357,415 Redbanded leafhoppers, 302 Redberry mites, blackberry and, 44 Red cedar. SeeJuniperus Redheaded pine sawflies, 319 Rednecked cane borers... 

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