Newly Posted Articles

PHALAENOPSIS: Breeding

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Line breeding reduces the range of variation; dispersion-breeding increases greatly the frequency of new and different forms; Phal. equestris and its three lines of breeding presented; refer to Wl1... Read More

BOTRYTIS: Time Lag to Its Visibility

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It takes normally 10 to 12 hours to show on cattleya flowers. A80-110 Read More

PH OF WATER: Adjustment of Salty Tap Water

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Phosphoric acid used to adjust slightly alkaline pH of 7.5 to acid pH of 5.5 to 6.0, thereby increasing the solubility of tap water to sodium chloride, to prevent crystallization on roots, etc.; ac... Read More

PH OF WATER: Adjusting with Vinegar

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Do not use vinegar to adjust the pH if it is too high; not recommended because acetates can be toxic to plants. A78-13 Read More

CYMBIDIUMS: Leaves Folding Over

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Flopping of leaves is caused by lack of light. A86-479 Read More

LIGHTS, GROWING UNDER: Summertime, Moving Plants Outside

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is not recommended in areas with only three months summer because the advantages are off-set by problems, especially insects, brought back into the lighted area. A82-393It is recommended in the ... Read More

LIGHTS, GROWING UNDER: Cattleyas Produce Few Blossoms

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A problem under lights; lower the minimum temperature to 62 dF at night and illuminate them longer to 13 hours. A81-393 Read More

BOTTOM HEAT: Under Seedlings

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Fine plastic tubes through which warm water circulates are arranged under the growing area and connected to the water heater; temperature is thermostatically controlled with a probe buried in the b... Read More

BROWN COAL: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Appearance is hard, solid pieces of peat, nearly brown coal in nature; keep their shape for some time, form an airy potting ball. A75-208 Read More

PH OF WATER: Acidifying Small Quantities

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use phosphoric acid in a sink full of water, adding it drop by drop until the desired and tested-for acidity is reached and before pots with plants are immersed in it. A57-417; use citric acid. A73... Read More