Newly Posted Articles

CARBON DIOXIDE: Crowded Cymbidium Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago If plants are crowded too closely together, in the daytime when they consume much more carbon dioxide than they release, then the carbon dioxide level drops rapidly, gentle air movement then is ess... Read More

WATER (GENERAL): Well-water Is Cleared Not Only of Saline Content

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago A reverse-osmosis system clears out also minerals that are good for the plants; to replace them regular soluble fertilizer is satisfactory for an organic potting mix, to replace the calcium lost ad... Read More

FOOT-CANDLES: Requirements for Some Types

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Epidendrums like 3,600, and some will stand full sun; laelias like 2,400 to 3,600. A61-982 Read More

FORMALDEHYDE: For Leaf Spot Control

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago A 10% solution applied with a swab solely to the affected area is very effective; but it kills all tissue it contacts. P71(2)24 Read More

FRAGRANCES: A List

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Flowers that are perfumed: Dend. supurbum, all Miltoniopsis (Columbian miltonias) and hybrids, Aerangis and Angraecums, Oncid. tigrinum, 0. ornithorhynchum, white cattleyas, dryadellas, Phalaenopsi... Read More

SHELL NO-PEST STRIPS: How to Use

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Buy four or five for a greenhouse sized lift, by 15 ft., use them only at night, with the vents closed; store each day in foil. A77-798 Read More

WATER SOFTENERS: Arising From the Bathroom Shower Vapor

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Any that forms on plants grown there should be free of chemicals, being close to distilled water, and a promoter of short humidity. A85-332 Read More

PHALAENOPSIS: Flowering Controlled with Artificial Lighting

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago It is neither effective or necessary because their response is to temparature of about 60 to 65 deg.F. at night and a daylength of from 12 to 16 hours; by pinching spikes just below the bottom flow... Read More

CARBON MONOXIDE: Great Damage to Plants Claimed

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Damage likely caused by some other agent, more likely ethylene; orchids are most sensitive of all plants to ethylene. A72-534 Read More

CARBONATE OF AMMONIA: As Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Small pieces, walnut size are placed near the heating pipes and their evaporation carries nitrogen to plants where it seems to be absorbed; one pound per year can be used in a greenhouse 20 ft, by ... Read More