Category: Orchid Doctor

FOOT-CANDLES: Optimums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For cattleyas the range is 2400 to 3600, for phalaenopsis it is 1500 to 1800. A86-815 Read More

FOOT-CANDLES: Outdoors, in Alberta

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago During the summer there are about ll,000fc.; during winter between 4,500 and 6,000fc. A60-770 Read More

FOOT-CANDLES: Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A sodium vapor lamp illuminated all night 100ft. away from cymbidiums in a greenhouse may not affect their flowering because they are temperature-responders; but plants requiring short days will no... Read More

FOOT-CANDLES: Requirements for Main Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cattleyas/laelias 3,000-3,500; cymbidiums 3,000; dendrobiums 3,000-3,500; odontoglossums 2,000+; oncidiums 2,500+; paphiopedilums 800-1,300; phalaenopsis 1,500-2,000; vandas and allied 3,500-4,000.... Read More

FOOT-CANDLES: Requirements for Some Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Epidendrums like 3,600, and some will stand full sun; laelias like 2,400 to 3,600. A61-982 Read More

FORMALDEHYDE: For Leaf Spot Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A 10% solution applied with a swab solely to the affected area is very effective; but it kills all tissue it contacts. P71(2)24 Read More

FRAGRANCES: A List

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flowers that are perfumed: Dend. supurbum, all Miltoniopsis (Columbian miltonias) and hybrids, Aerangis and Angraecums, Oncid. tigrinum, 0. ornithorhynchum, white cattleyas, dryadellas, Phalaenopsi... Read More

FRAGRANCES: In Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many orchids are not scented; some noses detect an odor where others do not; list of 19 fragrances types and related to a specific orchid; additionally singled out are Encyclia citrina, Laelia autu... Read More

FRAGRANCES: In Stanhopeas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Identification of the chemical components and the use of synthetics to attract pollinators; refer to A82-1262 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