Newly Posted Articles

CATTLEYAS: Flowers Open Prematurely

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cloudy weather causes short-day effect and stimulates flowering; weak light causes lack of carbohydrates. A77-619 Read More

POTTING MEDIA: Guidelines for Selecting the Right One

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A chart for the main types of cultured orchids, equitants or terrestrials, with recommendations, drying-cycle times, which mounts, containers and media. A81-1323 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

MYCORRHIZA: They Grow Without it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Killing it in the pot with fungicide does not harm the plant but improper doses at high temperatures could bring on crippling problems. A85-1237 -- infections = the incidence is high in Florida; re... Read More

PAPHIOPEDILUMS: Staking of Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Usually done to present the flower in an upright position; in nature, the dorsal sepal prevents rain from filling the pouch so the pollinator will not drown; as the bud opens, tilt the pot forward ... Read More

PAPHIOPEDILUMS: Stem Length

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is controllable in many plants; short stems may be caused by too low night temperatures during the flowering season or too high light intensity; 60 deg.F. and reasonable shade give good stem len... Read More

FUNGICIDES: What Are the Effective Broad-spectrum Brands?

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use Physan to control bacterial infections, benomyl (Benlate) is better for fungi, but where it fails use Truban or Banrot such as for Pythium; do not use Bordeaux in the greenhouse. A79-674 Read More

FUNGUS GNATS: Moss Flies; Characteristics and Control

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They lay eggs in pot compost; the larvae break down the compost; the surface clogs; they breed at an alarming rate in the heat; are killed by fumigation or aerosols used in rapid succession to brea... Read More

HEAT CYLINDER: Greenhouse Automatic Ventilation Control

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A cylinder and piston actuated by expandible liquid activated by rising and falling temperatures; used to open vents; lifts up to 50 pounds. A69-96+ 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