Newly Posted Articles

LEAF BLIGHT: Also Known as Leaf Die-back, Tip Burn

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Caused by fungus invasion; spreads gradually through leaf; cut it out before treating; infected areas show watery before drying; control with Benlate, or Anti-Damp, or Tersan. RMH Read More

LIGHTS, ELECTRIC: Interrupted to Save Electricity

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It can be done and has been proven by Thomas Young Orchids as feasible: "on" for ten minutes and "off" for thirty; can be applied in the middle of the night, from midnight to 2 A.M. approximately. ... Read More

LIGHTS, ELECTRIC: Outside Sources

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cattleya trianaei hybrids react to night light so a street light 25 feet away will stop flowering of the plant; cover plants with black sateen from 4 p.m. to 8 a.m. every night. A83-816The effect o... Read More

LIGHTS, ELECTRIC: Supplementary in Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If lamps are turned on until 11:00 P.M. in a greenhouse they will interfere with the normal photoperiod; therefore they are wasteful. A77-209Use of fluorescents or incandescents is of little or no ... Read More

APHRODISIAC QUALITIES: Of Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Stories regarding this are generally untrue. A72-299 Read More

LIGHTS, GROWING UNDER: Basic Culture Under Lights

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A review of requirements and conditions; "low-light" category of plants are most successful; a list of suitable species provided; refer to A75-792+ Read More

LIGHTS, GROWING UNDER: Genera Recommended

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It includes everything almost except cymbidiums, through some species are slow to flower, and the size of many species makes accommodation under lights almost impossible. A82-392 Read More

LIPS: Discoloration

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Brownish discoloration near the base is caused by low temperature. A67-574 Read More

CROWDING PLANTS: Do Not Do it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Air circulation is very important in the growth process. OD72-227 Read More

BRACTS ON SPIKES: But Flower Buds Don't Show There

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Both oncidiums and phalaenopsis require a cool treatment of several weeks to promote flowering. A80-960 Read More