Newly Posted Articles

FLOWER SPIKES: Tall Ones Shrivel and Fall Over

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Heavily pigmented doritaenopsis spikes may be absorbing too much heat and burning because they are so sensitive. A85-1323 Read More

UREA: Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago A good cheap source of nitrogen ; it does not readily combine with other elements to produce salts nor does excessive amounts cause too much damage to the plants. OR80-185 Read More

URINE: As Orchid Manure

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago By far the best manure for orchids; dilute it one to 10 with water; contains all the necessary salts and certain growth-promoting substances; refer to Holttum: Orchids of Malaya, I (1946) 37 Read More

VACUOLES: In Flower Segments

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago The change of color of a specific anthocyanin molecule results from the difference in the pH, which is largely genetically controlled. A83-1058 Read More

VANDAS: Crown Rot

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago During rainy weather in Florida additional protection is advised; deposit a small teaspoonful of Captan in the uppermost leaf axils and the crown; with each watering or rain a deposit of Captan wil... Read More

VANDAS: Leaves Fold in V-shape

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Caused by insufficient water and/or humidity and/or excessive sunlight. F76-85 Read More

CATALOGS: Of Commercial Growers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago The care put into catalogs is an indication of how their plants are grown, selected, packed, shipped; poor catalogs and price lists mean "lousy" plants. A80-1142 Read More

PATENTS: Issued by the United States Patent Office

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago The basic legal cost is about $1,000 (1977); purchasers of a patented plant cannot offer it, or portions of it, or propagations from it, for sale, without permission. A77-909 Read More

PEACH STONES: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago In South Africa first class growth and flowers are had on plants potted in peach stones obtained from the local canning factory; they do not break down; they hold sufficient water. OR76-160 Read More

PELORIA: In Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Use of deformed clones in hybridizing to obtain unusual petal markings or forms; refer to A83-722; F84-180; in cattleyas, refer to F84-235 Read More