Newly Posted Articles

POTTING MEDIA: Absent From the Pot

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can be done: vandaceous genera, various dendrobiums and oncidiums, in South Florida will grow in their containers without visible means of support if the owner can find the time to syringe, wate... Read More

POTTING MEDIA: Calcinated Clay Pellets

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Leaching and drying will move salts to the surface of calcinated clay; organic fertilizers do not make any difference; a nutrient solution designed to supply the plants with their nutrient requirem... Read More

ROOTS: Phalaenopsis on a Windowsill

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If roots show brown areas on the exposed ones it is because of too low humidity, A75-876 Read More

MICE: In Greenhouses

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They eat the pollen and cause flowers to change color; they eat pollen sacs of cymbidiums and sometimes parts of the flowers; they also eat pollen of cattleyas and phalaenopsis; control them with b... Read More

MICROFUNGUS INFECTION: In Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It looks like virus, like so many other things that aren't, it causes necrotic leaf spot depressions; to.fight it you first dampen the compost of the pot, then you drench the whole thing in Subdue ... Read More

MILTONIAS: Potting Mix Recommended

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Two parts chopped osmunda fiber; one part live sphagnum, a small amount of well-rotted cow manure added; water liberally when growing. A64-114 Read More

FOGGERS: Spray Cans for Insecticides

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Types such as Raid or Foregone are household types and the carrier used may injure orchids, so use only those designed for greenhouse use. A86-274 Read More

MINIATURES: Cattleya Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Handsome without being overwhelming; their appeal, cultural requirements, hybrid combinations, the micro-minis; a true miniature from five to 10 inches high; maxi-minis or compacts, characteristics... Read More

NUTRITION: Of Three Orchid Genera

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago N, P, K. and Mg.; scientific studies show cymbidiums and phalaenopsis attain optimal growth at lOOppm. of N., 50 to 100 ppm. of K., and 25ppm. of Mg. and for cattleyas the optimal at 50ppm. each of... Read More

MITES, TWO-SPOTTED: Characteristics and Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Tetranychus urticae is pale greenish or yellowish with a dark spot on each side; spun webbing on underside of leaves is apparent in heavy infestations; is large enough to be seen by the naked eye; ... Read More