Newly Posted Articles

FOAM RUBBER: As Potting Material

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Is of no use on its own; slabs of it did not induce successful growing. OR69-275 Read More

FOGGERS, INSECT: Operation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago A liquid oil-base insecticide is forced from the container through an atomizer nozzle; droplets are fed into a heated fog-producing chamber where vaporization occurs; in thirty seconds an ounce pro... Read More

CYMBIDIUMS: Bleed Lips

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Is usually caused by pollination removal of the anther cap and injury to the labellum; causes reddish coloration of the lip; does not occur in albinos. AU78-143 Read More

SHADING: Removing it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago A wire brush on a long pole, using water and soap, or Sal soda (Sodium carbonate -- washing soda, if you can find it) are aids to its removal. OD87-10 Read More

SHADING: Supplementary Type

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Ordinary plastic door or window screening provides about 2 0% screening, and two layers can be used effectively in an emergency. A85-1109 Read More

FOGGERS: Carmel Fogger

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago A powered ramjet type that produces a dense fog of insecticide directed up into the greenhouse fanjets to fill the house with fog; is effective against aphids and easy on the flowers. A83-613 Read More

SHADING: Too Much

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago 70% shade for cattleyas will produce thin and weak plants, the surest sign of not enough light, and 55 to 63% is usually recommended (in California?) A84-1061 Read More

FOGGERS: A Quick Way to Dispense Miticide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago To spray under the leaves of a large collection takes a long time. but to fog a large greenhouse takes about eight minutes. OA84-11 Read More

GAS: From Approved Heaters in Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Heaters not vented to the outside will damage flowers even if declared safe to humans. OD72-221 Read More

CALCIUM: Functions as Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Occurs in plants as calcium pectate; cements cells together; moves various compounds within the plant; enhances root development; is relatively immobile so a continuous supply is necessary. AU75-47 Read More