Newly Posted Articles

GREENHOUSES: Design and Construction

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Two-storey advanced design for intermediate to warm growing conditions as part of garage architecture; for details refer to A87-799 Read More

WARDIAN CASES: Construction and Operation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Large enough for 21 selected plants, cultivated in a "plantarium", with comments and success rate. OR81-350 Read More

WARDIAN CASES: Utility

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is considered by many to be "too close" for best growing, except for the "Jewel" orchids such as Ludisia discolor, and others, or some very tropical terrestrials. A86-923 Read More

WASPS: An Orchid Fly

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A small wasp inserts eggs into plant tissue which may kill the plant; no control given; refer to AH86-57 Read More

CYMBIDIUM PUMILUM: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Used to get viable seed as pod-bearing plant; hybrids of it show tendency to flower over many months; succession of spikes is possible; resents greenhouse culture in some places; its hybrids like w... Read More

CYMBIDIUMS: Flowers Change Color

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Lips and columns turn abnormal red if the an- ther cap is removed by injury or watering as it makes the flowers age more rapidly and vivid changes are shown. AH86-107 Read More

GREENHOUSES: Reflecting Light From North Wall

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use bright aluminum foil and keep it algae-free; it probably exceeds reflection from a white painted wall. A65-53 Read More

FLOWERS, CRIPPLED: In Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some of the older yellow hybrids were notorious for producing cripples; flowers were deformed and sometimes twisted and thickened. A73-906; not all blooms or every year.OWD Read More

CYMBIDIUMS: Seasonal Shortage of Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The most common reason for failure to flower in the north is shortage of growing season, not enough sunshine, which makes them permanently non-flowering; try warmth starting in February and maybe a... Read More

ONCIDIUMS: How to Grow Them

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago General cultural directions for most types; refer to A79-334+ Read More