Category: Orchid Doctor

NUTRITION: In Tropical Forests

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Distribution and density of plants, the role of birds and other animals, nutrition from everything possible -- litter, rainfall, throughfall and stemflow; role of epyphylls or run-off from other pl... Read More

NUTRITION: Of Plants in the Wild

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Special problems of nutrients and water uptake, the role of roots, leaves, rainfall, etc.;rrefer to OBII-197 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

NUTRITION: Principles

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Review of all aspects, from a scientific point of view; refer to A61-277+ Read More

OAK BARK: A Preferred Substrate

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In the natural habitat its corrugated bark supports orchid life; in England oak trees contain gallic and ellagic acids which are growth inhibitors, except for Quercus castonia and Q. vicentensis, b... Read More

OAK LEAVES: As Potting Additive

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They contribute to the breakdowhnof the potting mix in about six months. OD70-27 Read More

OAK LEAVES: With Bark as Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Gather the leaves in the fall, store them dry until brittle, break them by hand into pieces one inch or less, add 337, to bark mix with limestone at half a pound to a cubic foot. A81-1311 Read More

OASIS: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A patented material made of granulated foam and dolomite lime, proven by wide use in Holland and Belgium, it needs a balanced fertilizer such as 20-20-20. OA82-8; A86-500 Read More

OASIS: Floral Arrangement Material

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cattleyas root readily in it; result not surprising but unique; Dow Chemical Co. once developed a plastic rooting material which showed good results. A74-969 Read More

OASIS: Plastic Foam Material

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Widely used in Holland as a potting medium; water-absorbent it does not decay and can be re-used after sterilization; it should be leached before use and it requires lime to counteract its natural ... Read More