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Orchid doctor

BUDS: Black Inside Cattleya Sheaths

Posted by Sys Admin almost 3 years ago Rather common condition; to avoid it, when the buds appear clearly in shadow, cut off 1/2 inch from top of sheath; probably caused by sudden temperature change. A81-1436 Read More
Orchid doctor

BUDS: Initiation Within Cattleya Sheaths

Posted by Sys Admin almost 3 years ago In response to a signal, probably of chemical origin, the base of sheath develops rudimentary flower buds; the chemical signal is a hormone triggered by day length shorter than a critical length de... Read More
Orchid doctor

CATASETUMS: Sterile Flowers

Posted by Sys Admin almost 3 years ago Some years all flowers produced are sterile, with a faulty column lacking both pollinia and stigma; some years perfect flowers are produced by the same plant; other times male inflorences only appe... Read More
Orchid doctor

CYMBIDIUMS: Sepal Curl

Posted by Sys Admin almost 3 years ago Can be caused by spraying with an emulsion concentrate insecticide such as Zectran. C71-199; OA78-195; or, by too much wetting agent. C72-122 Read More
Orchid doctor

ALGICIDES: Condensation Drip From Air Cap Insulation Promotes Algae

Posted by Sys Admin almost 3 years ago To render drip harmless spray with Physan 20, 1/2 tpg. A79-124 Read More
Orchid doctor

BENZYLADENINE: For Lateral Bud Development of Paphiopedilums

Posted by Sys Admin almost 3 years ago A single application is adequate to stimulate axillary buds from near the stem bases of flowered divisions. A77-415+; A77-934 Read More
Orchid doctor

BEST PLANTS: Five More Favourites for a Desert Island

Posted by Sys Admin almost 3 years ago Nanodes medusae, Den. fimbriaturn var. occulatum, Coelogyne ochracea, Cym. Bulbarrow 'Will Stutley", Cycnoches chlorochilon. OR86-263 Read More
Orchid doctor

BLACK TIPS: On New Shoots on Cattleyas

Posted by Sys Admin almost 3 years ago If the blackening does not progress rapidly it is probably not due to disease but excessive use of fertilizer. A72-1100 Read More
Orchid doctor

B. DIGBYANA VAR. FIMBRITELA: Culture

Posted by Sys Admin almost 3 years ago Takes practically full sunlight, liberal watering and a night temperature of 60 deg. F. A63-390 Many are reluctant to flower; buy only those with evidence of flowering; hang high and dry; if it ... Read More
Orchid doctor

CATASETUMS: Types and Controls

Posted by Sys Admin almost 3 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

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