Category: Culture

GREENHOUSES: Solar Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A system incorporating a conservatory to trap efficiently solar energy, with reflectors to boost input through geometrically oriented windows; apertures and insulation methods; 70 genera housed; il... Read More

GREENHOUSES: Space Limitations Impose Changes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Get rid of the poor plants in the collection; relocate the inanimate objects; use step benches for more pot space, use vertical space by means of mounted plants, for pot hangers, etc.; use floor sp... Read More

GREENHOUSES: Submerged

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A combined solar and sunken structure in Maryland has marry advantages; for complete details refer to A82-1141An "English" style, size 7 ft, by 9 by 5.5 deep; a huge success is the claim and econom... Read More

GREENHOUSES: Unheated in San Francisco

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Growth and flowering may be delayed at a night temperature of about 50 dF (lO dC); if the temperature was lower the plants should be given some warmth or moved to a warmer area at critical times. A... Read More

GREENHOUSES: Warm Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A discussion of location, size, shape, energy conservation, air movement, heating, automation, in New Zealand, refer to NZ86-82 Read More

GREENHOUSES: Western Red Cedar Construction

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For data on design, construction pointers, etc. refer to OR87-14 (England) Read More

GREENHOUSES: Winterizing

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

GYPSUM: Supply of Calcium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not highly alkaline, is available as a powder which should be useful in a tight potting mix but will wash out of a loose or open mix; pellets of it can be made by mixing Plaster of Paris with... Read More

HEATERS: Back-up for Main Unit

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If it is ever used in emergency there should be a guarantee obtained from the dealer that it will not produce ethylene when it is used; get a written guarantee. A80-1140 Read More