Newly Posted Articles

SEPAL WILT: Cattleyas and Their Hybrids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cattleyas are the most sensitive of all in the whole plant kingdom to ethylene; one part in five hundred million parts of air can ruin sepals and eventually the whole flower. A73-905 Read More

SEPAL WILT: Ethylene Injury Prevention

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Silver ion (Ag+) is very effective in preventing dry-sepal (ethylene) injury on Cattleya flowers as it will protect them from doses 30 times as strong. Hort. science,1976-174 Read More

SERVO: As a Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A proprietary medium apparently mostly made from sugarcane bagasse with perlite and small charcoal chips; lasts one year; source given. OA86-204 Read More

SEX DETERMINATION: Of Cattleya Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Using a sex indicator as used to determine sex of chicken eggs (inch-and-a-half metallic cone, or needle) attached to long silk thread, cattleya plants registered as either "male" or "female" consi... Read More

SHADE HOUSE: A Screen House

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A summer-winter combination structure using roll-up Griffolyn panels for seasonal changes and built for cool-growing species; for mid-California; for construction details refer to A85-1324; 8ft.x 1... Read More

SHADE HOUSE: Location

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Full sun exposure is best; a north-south axis is good; best compromise is full morning sun; for Florida 53% of actual shade is best screening, with additions for some genera; some sections or plant... Read More

FLOWERS: Removal, to Aid Growth of the Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Only if the plant is weak and poorly rooted; well-established plants do not need it; but a second flowering of a seedling or repotted plant is likely an improvement. A67-330 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