Category: Culture

COOL-GROWING PLANTS: Two Basic Elements in Their Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Lower the night-time temperature and provide a moist/windy atmosphere. ODA77(3)-5 Read More

COPPER: Effect on Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are sensitive to copper; metal stakes containing copper might be toxic. A61-54They are sensitive to it; metal stakes containing it may be toxic; citrus trees in the tropics sprayed with a copp... Read More

COPPER WATER PIPES: In Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Are very popular; not likely to harm plants unless water supply has a high carbonic acid content. A76-1102 Read More

CORK BARK: What Orchids Grow on It?

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Many epidendrums, oncidiums, small dendrobiums, and cattleyas will grow on cork slabs; ground cork pieces, if medium bark sized, can be used instead of bark but they hold less moisture than fir bar... Read More

CORKS, WINE: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago When cut up in pieces the size of medium bark they are good for many genera; whole corks or half-corks cut lengthwise and nailed to a flat of wood make excellent mounts for species with some moss a... Read More

COW DUNG: As Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Advantages and disadvantages as used in England and Singapore; especially beneficial to Vanda hookerana. OR70-90+ and 104 Read More

CREOSOTE: As Wood Preservative in Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Do not use it; use only copper napthenate well painted over. A74-1062; AH53; S211 Read More

CREOSOTE: To Remove From Greenhouse Wood

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Using rubber gloves drench the boards with 5% caustic soda, let stand for an hour, wash off with hose; let boards dry and then coat with linseed oil. A65-438 Read More

CRESTLITE (TRADE NAME): (trade Name) in Cymbidium Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is calcinated clay, the size of small pebbles; an industrial compound. OA79-168;-171 Read More

CHARCOAL: In Cymbidium Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Has many good qualities to recomend it; used in many parts of the world; one questionable point is its filtering effect whereby modern insecticides and fungicides added to the mix may be adsorbed a... Read More