Newly Posted Articles

PHYSICAL CHARACTERISTICS: They Indicate General Growing Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Terete leaves require sun; broad thin ones need shade; lengthy erect flower spikes appear on terrestrial or rock growers; arching scapes are typical of epiphytes such as oncidiums but 0.splendidum ... Read More

PLANT-TREES: Design of a Vertical Type of Plant Holder

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago To take plants in pots; use of pipe and spacers threaded over with 15 spacing blocks; can be as high as allowable; takes 12 to 35 platform sticks on which pots can be set; refer to ODA69-128+ Read More

LEAF NECROSIS: Severe

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is caused by Cymbidium necrotic ringspot virus; deadly but rare; new and old growths are killed; destroy plant. N323 see also Necrotic spots Read More

CATTLEYAS, BIFOLIATES: Flowers Get Smaller From Year to Year

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago This is not unusual with plants grown in the home or under lights where a change in culture is involved contributing to a loss of vigour or energy; a greenhouse produces better flowers usually. A84... Read More

SOW BUGS: In Fir Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Control by dusting the surface of the pot mix with Sevin dust 5%. A82-1061 Read More

HUMIDIFIERS: Portable Unit Develops Fungus Growth

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago To control this, use Physan 20 one drop in three-quarters of a gallon of water. A78-698 Read More

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

BOTTLE GROWING: Sophronitis Coccinea

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Inside a quart bottle place crocks on bottom covered with 9 pts. osmunda and 1 pt. sphagnum moss with plant in the mix; hang near top of greenhouse, shaded from sun's strongest rays, with open top;... 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