Newly Posted Articles

CATTLEYAS, BIFOLIATES: Light Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some hybrids need short days and long nights in winter to initiate inflorescences. A87-33 Read More

PSEUDOBULBS: Black

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A fungus disease causes this on cattleyas; control it best by watering in the morning and provide good air circulation. A68-1107 Read More

COLD PROTECTION: Of Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A killing frost is about 27 deg.F; to protect exposed plants, carry them indoors; in a semi-closed area burn hibachis or wood stoves to keep temperature above freezing; cover area with polyethylene... Read More

COLLEMBOLIDS: How to Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They seldom damage plants; control them by drenching with solution of 2 tpg. Malathion 50-57%. A80-1141 Read More

HEATERS: Wood-burning Stoves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They are not recommended because they ruin most orchids unless the draft is fully open at all times to discharge fumes into the neighbour's back yard. A81-526 Read More

PSEUDOBULBS: Rotting

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago When this happens, open up the potting mix if it is dense; watch for water with nutrient in the leaf joints which can cause bacterial damage; peat moss and sand in t he mix can also contribute to i... Read More

PSEUDOBULBS: Sheath

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Technically called the cataphyl, the membraneous covering is a protection to the new bulb and especially to the new eye; remove it only if it is loose. A68-7 Read More

BOG ORCHIDS: How to Grow in Containers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Medium is 5 pts. perlite, 3 pts. vermiculite, 2 pts. sphagnum peat moss; bits of charcoal on top; plants at surface of medium; top with live sphagnum moss; refer to A79-556+ Read More

BONE MEAL: A Classic Fertilizer Feed

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A source of phosphorous and a small amount of nitrogen; very slow release material; not commonly used; has little effect as a top dressing; superphosphate is cheaper and more easily obtainable. A70... Read More

PH (GENERAL): Of Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Experiments show that if a recommended medium is chosen the initial pH should cause no concern. Hort. revs. 1983-195 Read More