Category: Culture

OSMUNDA: Chemical Analysis (typical)

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Moisture 12%, pH 4.3; ash 5.5%, nitrogen forms 0.14%, phosphorous 0.06%, potassium 0.57%, calcium 0.4%, magnesium 0.3%, sulfur 0.16% and silica 3.0%. A65-832 Read More

OSMUNDA: Does it Need Fertilizer?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cattleyas and phalaenopsis plants grown in it get most if not all the nutrients they need, without fertilizer; do not use more than one teaspoon to five gals, water with a 20-20-20 or other formula... Read More

OSMUNDA: Its Qualities

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many growers use it for all genera; it should be relatively strong in fiber quality, not decaying and soft; it has largely been replaced by bark. A74-114 Read More

OSMUNDA: Preparation for Use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It grows in swamps; grub out the roots of the fern; dry them and remove soil and debris; sterilize with methyl bromide, to kill weed seeds, but handle with care; store in burlap bags; for use, soak... Read More

CARBON DIOXIDE: Percentages of Composition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In air it is about three hundredths of one percent; plants can use greater amounts to approximately 0.5 to 1%; data not related to orchids. OR72-34 Read More

OUTDOORS GROWING: Requirements for Locality

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Warm days are needed with cool nights, frost, but no freezing, good humidity in summer and dry in winter, approximately 20 inches of rain annually, and not many summer days over 100 deg.F. OD78-63 Read More

OUTDOORS GROWING: Virginia Area

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plants respond dramatically to the change to outdoors; climatic factors and culture are important; refer to A75-507+ see also Cool growing Read More

OVERCROWDING: Of Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchids love company and do not usually object to crowding; it does affect their growth as leaves and spikes can become entangled; it is difficult to tend each plant properly; mealy bug, scale and ... Read More

OVERPOTTING: Poor Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is conducive to poor aeration after watering; it is self-defeating as an aid to less watering, or as an aid to less frequent potting. F70-87 Read More

FERTILIZERS: 30-10-10 with Soil Acidifiers and Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A suitable fertilizer, use 1/2 tpg. at every watering but let 10% of the liquid run out of the pot for leaching action. A74-114 Read More