Category: Orchid Doctor

CYMBIDIUMS: Spraying When in Bud

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use of insecticides should be avoided because they often cause "burn" spotting on flowers and deforming of petals. OD66-44 Read More

CYMBIDIUMS: Sterility in Hybridizing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For the most part, first generation miniature hybrids are sterile; most efforts to get seed from them are futile; Arno Bowers was an exception as hybridizer. A64-5 Read More

CYMBIDIUMS: Sterility Problems in Hybrids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Suspect low-level fertility in the first generation plants can be confirmed by microscopic examination of pollen; refer to OA81-72 Read More

CYMBIDIUMS: Summer Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Do not keep them in a hot enclosed space; they do better in an airy,partially shaded outdoor location. OA79-123; commercial growers do differently in the north and keep their plants in the greenhou... Read More

CYMBIDIUMS: Symptoms of Calcium Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Not easy to spot; first sign may be reduced spiking; use dolomite lime; a soluble fertilizer likely provides enough calcium. OD71-278 Read More

CYMBIDIUMS: Symptoms of Magnesium Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Causes a yellowing of plants; try adding Epsom salts to the nitrogen-rich fertilizer. OD71-278 Read More

CYMBIDIUMS: Symptoms of Nitrogen Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Very yellow foliage, less vigorous growth, plant looks stunted. OD71-278 Read More

CYMBIDIUMS: Symptoms of Phosphorous Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plant won't bloom; lack of phosphorous causes delay in reaching maturity. OD71-278 Read More

CYMBIDIUMS: Symptoms of Potassium Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Leaves of older growths tend to turn yellow, starting from the tip and working toward the pseudobulb. OD71-278 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