Category: Orchid Doctor

CYMBIDIUMS: Blooms with Small Raised Bumps

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Probably caused by spider mites, plant lice or aphids; before the buds form control with malathion but add 1/2 teaspoon of liquid detergent to the spray. A78-812 Read More

CYMBIDIUMS: Breeding

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Modern efforts are aimed at producing classic exhibition greens, an FCC in reds before the end of this century; use of colchicine conversion in miniatures; the importance of the converted tetraploi... Read More

CYMBIDIUMS: Brittleness in Half-grown Stems

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If breakage is frequent it can be attributed to a boron deficiency; dissolve one level teaspoon of borax in 1 quart of water, take one level teaspoon of the solution and put that in one quart of wa... Read More

CYMBIDIUMS: Bud Appearance

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Liquid insect sprays applied when buds are appearing may cause them to distort and malform. OD70-239 Read More

CYMBIDIUMS: Bud Blast

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 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 almost 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

CYMBIDIUMS: Bud Drop

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago During hot weather buds drop if the plant has an ancestor C. lowianum 'concolor' which has as its progeny C. Alexanderi 'Westonbirt'. OA86-82 Read More

CYMBIDIUMS: Bud Fall

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A problem after buds have developed at 50 deg.F.; avoid removing them to a location where night temperature exceeds 58 deg.F. because buds will likely fall off. OA79-184 Read More

CYMBIDIUMS: Buds and Flowers with Pimples

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Red spider can enter the loosely encasing final sheath on the spike and can attack the buds just before their emergence; damage is noticed near flowering size; spray early or before spikes get a go... 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