Newly Posted Articles

WATER (GENERAL): Alkaline From Well

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago So long as there are no excessive salts content, it can range from a pH of 4 to 9, but water with a high calcium content should be kept off the leaves. A83-816 Read More

WATER (GENERAL): All-wet Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago When some plant supports sagged the pots were lowered so the bottoms were in 1.25 inches of water continuously and they developed perfectly so were not damaged by the immersion. AU85(l)-35 Read More

WATER (GENERAL): Bath Water Used on Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago It can be only if the detergent used was mild baby shampoo; soaps might be harmful, joined with calcium and magnesium would result in precipitates in the rooting media. A77-527 Read More

WATER (GENERAL): Best Range

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago The pH range should be 5 to 7 (or 4 to 9 for cattleyas, and the soluble salts should be less than 500ppm. A87-515 Read More

WATER (GENERAL): Cold Weather Means Less Water

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Plant metabolism is reduced in winter to low levels and less water is required. F81-17 Read More

PERLAG: Aggregate

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago As potting medium additive: it is inert, sterile, has neutral pH; experiments with potting 150 seedlings in several mixes; 1/2 coarse Perlag with 1/2 lumpy peat or bark, plus some charcoal is recom... Read More

PERLITE: Aggregate

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Additive to potting mixes: white, light product of volcanic origin; inert, holds water, does not decay; keeps medium open; use agricultural grade. OD77-4; RMH Read More

PERLITE: As a Culture Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Coarse perlite alone with a half-inch topping of pea-gravel makes for a healthy root system on a cattleya with normal watering and feeding;a test of two parallel sets of phalaenopsis plants, one in... Read More

FERTILIZERS: Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Use 30-10-10 in bark or Mexican tree fern. A79-124 Read More

CROWN ROT: Of Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago In nature these plants grow in swamps under rain or under constant spray from waterfalls and they don't develop crown rot; but when water is allowed to stand in their crowns under warm temperatures... Read More