Newly Posted Articles

LATH HOUSES: Percentage of Shade Advisable in Texas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Plan for two-thirds shade if the house is covered in winter; if not, use three-quarters shade nearly; adjust the amount by spacing the laths. A72-807 Read More

LAVA ROCK: As a Substitute for Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Red lava has distinctive characteristics, for comments, comparisons, criticism which point up mostly its advantages, such as re-usability for many applications and because it does not assimilate ni... Read More

JEYES FLUID: Disinfectant

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Registered for soil conditioning in the U.K. it is used as a spray against such orchid pests as black spot, red spider mite; is useful for eliminating slugs and snails; has been tested on cymbidium... Read More

LEADS: Multiple Type

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In cattleyas it is usually the single lead type which flowers first; multiple lead types usually do not flower unless they are of a "specimen plant" nature. A87-1037 Read More

LEADS: Multiple

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago How to encourage their production: cut the rhizome in places part through; let each root itself; repot singly. A79-272How to force a cattleya to develop them: cut through the rhizome three bulbs be... Read More

PAPHIOPEDILUMS: Potting Techniques

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Pot firmly without crushing the roots; to examine root development strike the rim of the pot on the bench, examine the roots without disturbing the compost, then replace; new roots show at the side... Read More

HEATERS: Wood-burning Stoves

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are not recommended because they ruin most orchids unless the draft is fully open at all times to discharge fumes into the neighbour's back yard. A81-526 Read More

BLACK ROUND SPECKS (BALLS): On Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Likely spores of a common bark fungus Spaerobolus stellatus which may be shot two to three feet by the fungus; not harmful; drench mix with Physan; (may be fly excreta?) OD73-115 Read More

ETHYLENE: In Nature

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A ripening gaseous hormone in plants; an air pollutant to orchids; occurs in orchids; within hours of pollination orchid flowers produce it and flowers change; shipping containers permit it to accu... Read More

PH (GENERAL): Of Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Experiments show that if a recommended medium is chosen the initial pH should cause no concern. Hort. revs. 1983-195 Read More