Category: Culture

LIGHTS, GROWING UNDER: Basic Culture Under Lights

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago A review of requirements and conditions; "low-light" category of plants are most successful; a list of suitable species provided; refer to A75-792+ Read More

HUMIDITY: For Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Set the humidifier at 70% relative humidity if the humidistat is reliable, and sensitive; set at 60% to 70% on one that is not. A65-438; phalaenopsis and cattleyas. A80-630 Read More

BOTTOM HEAT: Under Seedlings

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Fine plastic tubes through which warm water circulates are arranged under the growing area and connected to the water heater; temperature is thermostatically controlled with a probe buried in the b... Read More

GREENHOUSES: Pressure-treated Lumber for Construction

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Avoid wood treated with creosote, pentachlorophenol or copper compounds; the non-toxic ones are fluorochrome, arsenate phenol, and chromated zinc chloride. A86-147 Read More

FIBERGLASS: Clear Panels on West Side and Green-blue on East

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Use only clear throughout, or nearly clear white; the green-blue will heat the greenhouse too much in summer and add to coolness in winter; it will also filter out too much of the red light. A72-55 Read More

HYPONEX: Required Percentage of Flowers Open

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Had one flower or more missing, crippled or damaged; plant was too small, or in bad condition; other reasons. FR123 Read More

GREENHOUSES: Plans to Build

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago A publication is usually available from your government college of agriculture which recommends plans. A72-412 Read More

ACID-LOVING PLANTS: Acid Fertilizers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Orchids benefit from Miracid (30-10-10); considered an excellent formulation. A77-43 Read More

HEATING, COOLING AND HUMIDITY: Review of Problems

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Refer to A63-85; 531+ Read More

POTS (GENERAL): Clay Vs. Plastic

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 6 years ago Comparative experiments under scientific conditions demonstrated that cattleya-type orchids grow almost as well in plastic as in clay; differences in growth due to aeration by clay. A61-32+; OWD. c... Read More

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