Category: Orchid Doctor

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: Weed Control on Gravel Floor

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Weeds growing from the soil under the gravel can be sprayed with Simazine 80W, or with Telvar, or with ordinary borax. A70-427; A71-609 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

GREX: Meaning

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 1. a group of plants from an artificial hybrid cross; or, 2. all the progeny of a given hybrid cross. A80-866; A87-253A term used to denote an assemblage of individual plants of a manmade hybrid, a... Read More

GRIFFOLYN: Insulation Sheeting

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A double plastic bonded to cross threads for durability allows about 90% light transmission; for example of application refer to A85-1324 Read More

GROWTH CHAMBER: For Germination of Seeds

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Constructed economically from an old refrigerator, with light and temperature controls; diagrams illustration; refer to A64-102+ Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More