Newly Posted Articles

GREENHOUSES: Most Efficient Use of Sun's Radiation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago The Ritelite planthouse; has its glass surfaces opposed to the surface of the atmosphere; are fixed in "normal" position in mid and higher latitudes to approximate tropic light values; refer to OA7... Read More

GREENHOUSES: Winterizing

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago The heaters, whether electric, kerosene or gas, or oil should be checked; the structure should be examined for leaks; a double layer of plastic insulation should be installed for winter only, a hea... Read More

GREENHOUSES: Wood Treatment for Construction

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Creosote or pentachlorophenol should not be utilized due to their toxic fume release for years after; avoid copper compounds which are also toxic to orchids; use fluorchrome, arsenate of phenol, or... Read More

HAIL DAMAGE: To Plants Growing Outside

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Pitted foliage changes it to an unsightly problem; the only remedy is to cut off the damaged parts as long as the health of the plant is not set back too much; spray the cut areas with Benlate at l... Read More

CYMBIDIUMS: Commercial Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago The energy crisis gives an impetus to the move made by growers to establish themselves along the world's 35 deg.F. line, north or south of the equator, where fuel is not required. AU76-128 Read More

CYMBIDIUMS: Converted Backbulbs, Starting

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago They will start on their own; clean them well, place upright in a flat under the bench; pot up when growth begins. A86-1031 Read More

SNAILS: Tiny Ones in Pots

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Spray or dust bush snails with a metaldehyde preparation. A73-208 Read More

HAIL PROTECTION: Of Glass-covered Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Possibilities are: frames of lath shading (three-quarters inch wood strips one-half to one inch apart) can be placed above the glass in spring, and can be removed in fall; or frames of hardwood clo... Read More

HAIR: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Collect a bagful at the men's barber shop (women's hair is too frequently treated with unsuitable chemicals) mix it with sphagnum moss and some per lite, charcoal and maybe some crushed shell, for ... Read More

HEART ROT: Caused by a Species of Phytophora

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago It especially affects phalaenopsis and vandas; begins on a leaf and spreads to the stems; cut off infected areas early; soak plant in Anti-Damp then treat with Tersan. A73-813 Read More