Category: Culture

LIGHTS, GROWING UNDER: Basic Culture Under Lights

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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

LIGHTS, GROWING UNDER: Comparison of Lamps

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 500 paphiopedilums grown under fluorescent lamps and the same number grown under high-pressure sodium lamps (SON/T) for nine months indicated the latter were better; also cheaper to install; they a... Read More

CARBON DIOXIDE: Percentages of Composition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In air it is about three hundredths of one percent; plants can use greater amounts to approximately 0.5 to 1%; data not related to orchids. OR72-34 Read More

LIGHTS, GROWING UNDER: In a Weather-controlled Area

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Instructions on how to construct; list of supplies needed; kinds of controls required and method of installation; for details refer to A70-581+ Read More

LIGHTS, GROWING UNDER: In Living Area of the Home

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The main problem is one of water access and disposal; solution to the problem; 48 sq.ft. of growing space; refer to A75-985+ Read More

LIGHTS, GROWING UNDER: Low-light and High-light Requirement Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many apparently inappropriate genera will do better under lights than expected; list provided; refer to A74-585 Read More

LIGHTS, GROWING UNDER: Natural Seasons

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plants have the same seasonal requirements under lights; lights can be timed with timers to provide the approved number of light hours daily; by shutting them off the "night" temperature will be lo... Read More

LIGHTS, GROWING UNDER: Problems Associated with Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For weakness of growth and failure to flower and related problems refer to AH45 Read More

LIGHTS, GROWING UNDER: Requirements for Different Genera

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Low-light intensity plants such as pnalaenopsis, paphiopedilums and some miltonia hybrids do well; hybrid cattleyas, frequently recommended, barely fulfilled expectations by available light from 44... Read More

FERTILIZERS: 30-10-10 with Soil Acidifiers and Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A suitable fertilizer, use 1/2 tpg. at every watering but let 10% of the liquid run out of the pot for leaching action. A74-114 Read More