Newly Posted Articles

BLACK ROT: Pythium Sp. of Fungi

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago On cattleyas; cut rot away ruthlessly; burn the compost; immerse plant in Orthocide captan at 1 teaspoon to 1 pint water for one hour. OR76-99 Read More

BLACK ROT: Pythium Ultimum

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Most destructive of cattleyas, others are susceptible; similar symptoms to Phytophora cactorum; small water-soaked spots, later turn purplish black; yellow margin advances; spread quite rapid, 2 or... Read More

SENSITIVE OR PSYCHIC ORCHIDS: The Life Force

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A digest of a talk on the "aura" of plants; use of a pendulum to determine vitality; words on the axis of development; proper geographic orientation of plants necessary for their thriving. NH74(2)-5 Read More

PLASTICS: For Greenhouses

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago There are no standards for construction or quality and no specifications; clear is suggested for orchids, or, also known as colorless, with ultra-violet resistance. A75-298 Read More

SENSITIVE OR PSYCHIC PLANTS: Talking to Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Whether it is the talking or the mundane thought "it's just your used breath" -- paying close attention does reap some benefits in culture. AU80-167 Read More

BLACK ROT: Treatment with Dexon

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Remove diseased parts; soak or drench pot in one teaspoon per two gallons water three or four times at 10 to 14 day intervals; it is surface effective only. A74-969 Read More

BLACK ROT: Two Kinds Are Prevalent

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago One is a cool-weather rot, the other is a warm-weather type and both cause blackening of leaf tissue; both are contagious and can be spread by splashing water; keep plants dry, spray with Benlate; ... Read More

PAPHIOPEDILUMS: Weak Flower Stems

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago P. bellatulum and concolor characteristically have weak stems. A88-34 Read More

NEEM TREE: Source of a Chemical Abstract Used as Pesticide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A natural product called Margosan-0, sometimes used by orchidists, has an active ingredient: azadirachtin which repels insects, affects their feeding or deregulates their hormones. F87-57 Read More

NICOTINE SMOKE: Used as Control of Aphids and Thrips

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Great precautions must be taken because of its toxicity; refer to AH13 Read More