WEEVILS: Characteristics and Controls

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 8 years ago.

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It was once a destructive pest; now in many places no more a problem. AH7; in northern areas a small black weevil (black vine weevil?) cuts scallop-shaped pieces out of edges of flowers at night; they can be searched out with a flashlight at night and picked off; their larvae feed in the compost; in Hawaii. P69(l)-10; they feed on roots. OR74-223
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Weevils Comments
WEEVILS: Black Vine Weevil It eats leaves of plants and petals of flowers; drench the pots with Diazinon 50% WP at 2 ttpg. A78-309; adults can be controlled by fumigation with Lindane or by use of Derris dust. OR79-227 0
WEEVILS: Controls Lindane is useful, at a formulation lower than recommended; it is toxic at LD50-1/2 oz. A68-583 0
WEEVILS: Insect Vine weevil a common pest; they are black about 15mm long with a prominent snout; unable to fly they move slowly and can be easily caught with a flashlight; they cut notches in leaf and flower edges and eat roots; control with Aldrin dust. OR85-222 0
WEEVILS: Types and Damage There are many of them and most are nocturnal ; they damage leaves, pseudobulbs, flower stalks, sheaths, flowers, by eating them; some prefer paphiopedilums; they lay their eggs at the base where monopodial new leaves are destroyed. OD83-145 0

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