Newly Posted Articles

CYMBIDIUMS: Shading Green Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Shade them shortly after buds are exposed from the sheath; this prevents red pigments forming to cause muddy coloration later. OA75-179 Read More

PESTICIDES: Plants Newly Introduced Into Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago All should be sprayed; recommended: Isotox plant spray which is as good as any, or Diazinon 50%WP. A78-403 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

CHARCOAL: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Because cellulose and lignin have been burned out in its manufacture it will last much longer than bark; suitable fertilizers are 18-18-18 or 20-20-20 at Itpg. A82-487Current use in U.S.A.; needs t... 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

PAPHIOPEDILUMS: Temperature Requirements in a Nutshell

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cool: P. insigne, fairrieanum, and druryi ; Moderately cool: exul, gratrixianum, hi rsutis s imum, villosum, spicerianum, venusturn; Moderately warm: the multiflowered kinds such as phiiippinensis,... 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

ETHYLENE: Effect on Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Plants subjected to ethylene showed leaf yellowing after two days and were completele defoliated within one week; plants were placed close to a stack of ripening apples. AU81-101 Read More

ETHYLENE: Filter Systems

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Activated charcoal in filter systems have proven successful in protecting greenhouses in San Francisco area from "oxident" and ozone damage but even brominated charcoal has failed. OD65-402; bromin... 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