Newly Posted Articles

NEEM TREE: Source of a Chemical Abstract Used as Pesticide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A natural product called Margosan-0, sometimes used by orchidists, has an active ingredient: azadirachtin which repels insects, affects their feeding or deregulates their hormones. F87-57 Read More

NICOTINE SMOKE: Used as Control of Aphids and Thrips

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Great precautions must be taken because of its toxicity; refer to AH13 Read More

NITROGEN SHOCK: Reducing Nitrogen Sharply in August

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In the Midwest, where cool August nights seldom occur, buds can be initiated for winter flowering by the reduction of nitrogen; applied to cymbidiums. A67-12 Read More

SERVO: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A formula of vitamins, growth hormones, charcoal bits, perlite and sugar-cane fiber; mixes well with cork nuggets; address; price. OIE85Mar-14It's mostly sugar-cane bagasse with perlite and charcoa... Read More

CYPRIPEDIUMS: Grown in a Northern Garden

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 12 native and exotic terrestrials grown successfully, with descriptions and cultural requirements; refer to CA84#2-20;#3-20 Read More

SEPAL WILT: Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The ends of cattleya sepals go brown and dry because of ethylene pollution in the air from automobile exhausts, etc.; perhaps from a defective heater; illus. A69-242; illus. A75-908; A77-437 Read More

FLOWERS, CUT: Making Them Last Longer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cattleyas should be open three to five days before they are cut, cymbidiums one to two weeks; cut early in the morning using sterilized knives; place stems immediately in cool water; locate in draf... Read More

FOOT-CANDLES: Light Intensity Required by Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cattleyas:2500-3500; dendrobiums: 1500-2500; miltonias: 800-1200; odontoglossums:800-1000; phalaenopsis: 800-1200. 0R81-112 Read More

MOON PHASES: Influence on Fertility of Crosses

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Make crosses only four times during the month: two days before the first quarter moon; one day after the first quarter moon; the day before the last quarter moon; and, on the full moon. OR79-116; t... Read More

CYPRIPEDIUMS: Culture in the Garden

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In Germany, cultural methods described for species gathered from all over the world; refer to OR77-340+ Read More