Category: Ailments

MITES, RED SPIDER: Control in Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Also know as two-spotted mite; in cool weather the adults change to the "carmine form"; first signs come usually in spring; during winter they seek shelter; controls: space the plants well apart; s... Read More

MITICIDES: What's Recommended in 1987

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Kelthane is off the U.S. market and Metasystox is restricted in some states of the U.S.; a "soap" may be the answer for some. A87-1174 Read More

WEED CONTROL: On Potting Media

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Three herbicides are recommended: Monuron (Karmex W, or, Telvar), Diuron (Karmex DW) and Princep 80W (Simazine 80W); for precise instructions on their use, refer to AH52 Read More

WEED CONTROL: With Simazine Herbicide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Experiments on weed control in pots of cattleyas, dendrobiums and vandas; results of extensive testing showed high effectiveness and low or no toxicity to plants. A63-521+ Read More

WEEDS: Control in Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Spray with 50% chlorox solution with a wetting agent; the elimination of oxalis, chickweed and mustard means fewer insects in the area. A88-256 Read More

WEEVILS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Lindane is useful, at a formulation lower than recommended; it is toxic at LD50-1/2 oz. A68-583 Read More

WEEVILS: Insect

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 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 edge... Read More

WEEVILS: Types and Damage

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 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 m... Read More

MOSS FLIES: Not a Harmless Nuisance

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The larvae eat the roots of young growing Pleiones; spray them with Malathion, then repeat to kill the next generation. OR82-402 Read More

WETTER-STICKERS: To Use with Malathion

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Any wetter-sticker improves this insecticide. A75-500 Read More