Newly Posted Articles

GREENHOUSES: Plastic Linings for Insulation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Still air is the best insulation, to achieve it use plastic linings of polyethylene about 2in. away from the inside of the roof; it is efficient; plastic bubbles material one inch size between two ... Read More

GREENHOUSES: Plastics and Their Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Plastic greenhouses can be heated as satisfactorily as glass ones; crops are of equal quality; construction costs per square foot are about one-sixth; in some areas they are assessed as temporary s... Read More

CYMBIDIUMS: Bud Blast

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago During fall months spikes that are exposed to strong sunlight may "blast"; it is aggravated by cool to cold nights with low humidity by day; aphids may also be a cause. A66-408 Read More

CYMBIDIUMS: Bud Deformation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago It is impossible to use emulsion concentrates as wet sprays on spikes without deforming the buds even though the open flowers are not harmed; use wettable powders, with a wetting agent at the right... Read More

GREENHOUSES: Preferred Covering

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Glass allows for a maximum of light or of shading; next comes clear fiberglass; for a strong sun area opaline or a frosted fiberglass may be best. A72-1100 Read More

CYMBIDIUMS: Concolor or Pure Color

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Albino flowers in the non-orchid genera frequently lack vigor; concolor cymbidiums are weak growers and prone to lose growths to rot, and to lose roots in winter. A079-182 Read More

FLASKING: Culture Medium for Terrestrial Cypripediums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Excellent results reported with: Hyponex 3 grams; Difco-Bacto peptone or tryptone 2 grams, sucrose 35 grams, agar 15 grams, water 1000 ml. and pH adjusted to 5.0 A63-354+; A63-927 Read More

FLOWERING TIMES: Of Species in the Northern Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Do not overlook the detailed study by Hamilton: When does it flower? orchid species in the greenhouse since 1881. RMH Read More

MERISTEMMING: Of Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Procedures stage by stage; refer to OD66-45+ (G.S.Morel); OD69-111+ Read More

CYMBIDIUMS: Concolor, Recessive-colored-lip

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Refers to a flower whose lip is devoid of customary red markings or pink suffusion; it is not necessary that the lip be the same color as the petals to be called concolor; the degree of yellow or g... Read More