Category: Orchid Doctor

CATASETUMS: Types and Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Stem-boring and leaf-eating; plants grown outside for summer can be infested with eggs laid by soil dwelling caterpillars; pots can be drenched in Lindane. OR79-205 Read More

CATASETUMS: With "perfect" Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Means "bisexual" flowers with functioning male and female parts; these have recently been transferred in classification to Clowesia and Dressleria; the majority of Catasetums have unisexual flowers... Read More

CATASETUMS: With Unisexual Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago About 99 species produce male (staminate) flowers and female (pistillate) flowers on the same plant; inflorescences with male tend to be longer, more arching and floriferous, generally the flowers ... Read More

CATERPILLARS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A B10-Insecticide containing Bacillus rhuringiensis and named Dipe1 EG (in Australia) is effective against them and can be applied over the buds. OD82-106; Thuricide is also safe but slow in action... Read More

CATTLEYA BLOSSOM BROWN NECROTIC STREAK DISEASE: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Occurs in Australia; symptoms described by its name; no leaf symptoms; is sudden and destructive; may be a complex of viruses. OD68-149 Read More

CATTLEYA DOWIANA: Difficult to Grow

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use 2,500 to 2,900 fcs.; constant moisture; no direct sunlight; use fiberglass or frosted glass as covering; no overhead spraying; use temperature of 60 deg.F. at night and up to 75 deg. F. days; u... Read More

CATTLEYA FLY: Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 1% Lindane dust, or 5% Chlordane dust are effective; or use malathion. A65-632; N330; S190 Read More

CATTLEYA GASKELLIANA: Multiple Leads; How to Encourage?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cut the rhizome in places part way through; let sections root; repot separately. A79-272 Read More

CATTLEYA INTERMEDIA VAR. AQUINII: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago All plants in cultivation are said to be divisions or selfings of divisions of the original; a peloric phenomenon; petals only show the splashing which is also in part a reduplication of the lip fo... Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More