Newly Posted Articles

BARK: Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A typical mixture would have about 15 parts medium bark, 1-1/2 parts coarse Perlite, 174 part charcoal chips (quarter-inch size). OR87-173For cymbidiums in a high humidity area near the ocean in Ca... Read More

VIRUS CONTROL BY CHEMICALS: Control by Disinfectant

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For benches and other contaminated areas and for washing hands, use Trisodium orthophosphate (also called sodium phosphate tribasic); put enough in a quart bottle of water so that some remains undi... Read More

VIRUS CONTROL BY CHEMICALS: Control for Cutting Knives

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A copper sulfate solution is 50 grams plus 50 milliliters of formalin (37% formaldehyde) dissolved in a liter of water, plus 10 to 20 drops of wetting agent or detergent; it is corrosive; a trisodi... Read More

OUTDOORS GROWING: In Miami Area

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago "grow or go" applies to orchids of minor importance in a large garden; plants are attached especially to oak trees on the east side at a point where water sprinklers hit a window-screener pouch wit... Read More

DIVIDING CATTLEYAS: Minimum Number of Pseudobulbs to Keep on a Division

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Four or five give the best results. A70-55 Read More

LEAVES: On Cattleyas Became Sunburned

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Do not put in shade but in good light out of the sun and heat and avoid over-watering. A72-204 Read More

INSECTICIDES: Their Toxocity

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For a list of 197 poisons, their use and toxicity, cross references to other names, their LD-50 dose in mg., and the routes they take to poison people, refer to A66-881+; N364+ Read More

VIRUS: Testing for

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago By chloroplast agglutination, agar double dif fusion, ELISA, etc.; refer to AH86-25; others, OA83-168 Read More

BEGINNERS: Best Plants for South Florida

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In South Florida the first choices would be vandas, cattleyas, ascocendas and dendrobiums (evergreen or cane types) and secondly would be oncidiums (particularly equitants) and phalaenopsis. F84-147 Read More

LIME: Oyster Shell, Its Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is calcium carbonate lime; ground up shells comes in coarse type for chicken scratch or flour type used by many orchid growers. C74-51 Read More