Newly Posted Articles

CYMBIDIUMS: Potting on

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Plants with five to nine bulbs with no backbulbs, or only one or two, should not be divided but potted on. OD68-122 Read More

CYMBIDIUMS: Propagating by Backbulbs

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Dormant vegetative eyes on the side are capable of new growth when detached, cleaned, set in flats filled with finer bark, or placed directly into pots and shaded. A83-148 Read More

PH OF WATER: Testing

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Litmus paper used to determine pH is unsatisfactory because color variations are too subtle to be determined; use a colormetric method where drops of Brom Creosol Purple are added to water to get a... Read More

BLOOD MEAL: A Common Source of Organic Nitrogen

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Contains 13% nitrogen; used as a dry feed top dressing; nitrogen released through activity of micro-organisms in about ten days to two weeks in warm weather; apply 1 teaspoon to a six inch pot; odo... Read More

PH OF WATER: Softeners

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago De-ionization produces excellent water for orchids; salt, or ion, displacement does not; chemical supply houses sell small laboratory de-ionization or de-mineralizer units. A80-4 Read More

QUINOLINOL SULFATE: A Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is used to control Pythium, Phytophthora, Sclerotium, Pseudomonas, Erwinia and petal blights; AH86-71 (8-Quinolinol) Read More

LIGHTS, GROWING UNDER: Suitable Species

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A list of about 35 plants with low-light requirements; refer to A74-792+ Read More

QUILLING: What it Is

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago New leaves stay rolled and upright and do not unfold naturally, also applied to petals of flowers which develop a length-wiseeinward roll; seems that a wetting agent in an insecticide spray if appl... Read More

PH OF WATER: Satisfactory Range

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 7 is recommended A78-309; other pH possibilities are: 8.0 to 8.4 is completely satisfactory; 7.2 or 8.4 should not be tampered with, depending on the locality; between 5.0 and 5.6 (medium strong ac... Read More

PH OF WATER: Its Effect on Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A pH of 5 or lower is satisfactory for watering if the sodium and calcium content are not too high; the facts can be found out from your city authorities; a laboratory analysis will determine if yo... Read More