Category: Orchid Doctor

WALNUT SHELLS: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is now available commercially in two sizes; refer to A85-516 Read More

WALNUT SHELLS: The Hulls as Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is used as an additive or a replacement for perlite or bark and it has been suitable by some growers. OA82-8 Read More

WARDIAN CASES: Construction and Operation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Large enough for 21 selected plants, cultivated in a "plantarium", with comments and success rate. OR81-350 Read More

WARDIAN CASES: Hermetically Sealed Model

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can reproduce any climate from desert to swamp by adjustment; native terrestrial cymbidiums bloom without watering; refer to A69-1068+ Read More

WARDIAN CASES: Indoor Orchid House

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Sixty plants grown in a space 30 in. by 20 in. by 30 in. high, with a humidity tray, a soil-heating cable, enclosing clear shower-curtain and polyethylene top, a socket grow-lamp and an outside win... Read More

WARDIAN CASES: Lights Necessary for Case 5ft. X 4 X 3

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use as many 40-watt fluorescent tubes as possible, maybe four, plus two 25-watt incandescents to provide red light; place the plants two to six inches from the lights; a small fan or blower is nece... Read More

WARDIAN CASES: Thirty Plants Under One Fluorescent Tube

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Resulted in the plants turning white and yellow from lack of light mainly; needed are four fluorescent tubes four ft. long; the plant leaves should be three inches below the lights, A63-303; A69-424 Read More

WARDIAN CASES: Utility

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is considered by many to be "too close" for best growing, except for the "Jewel" orchids such as Ludisia discolor, and others, or some very tropical terrestrials. A86-923 Read More

WASHING PLANTS: Mineral Deposit on Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Whitish calcium deposit can be removed with chemicals; use hydrochloric acid, 2.5 percent solution, which is a 27 percent industrial strength diluted with tenfold amount of water, and apply with a ... Read More

WASPS: An Orchid Fly

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A small wasp inserts eggs into plant tissue which may kill the plant; no control given; refer to AH86-57 Read More