DENDROBIUM PHALAENOPSIS: Buds Dry and Fall Off

Dendrobiums Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 8 years ago.


This article references Den. phalaenopsis.
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May be caused by ethylene. A79-262
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Dendrobium phalaenopsis Comments
DENDROBIUM PHALAENOPSIS: Hit by Cold Spell Remove all discolored canes and rhizomes; repot and water sparingly until new roots reach pot edge. F70-182 0
DENDROBIUM PHALAENOPSIS: How to Get Them to Bloom Grow warm and humid until Labor Day then move them to the cymbidium house, slightly reduce watering until Christmas when growths are complete; return to warm house for flowering in about 60 days. ODA72-128 0
DENDROBIUM PHALAENOPSIS: Minimum Optimums Hardcane: 65 deg.F. nights, with 50% relative humidity, and 4,000 fc. winter and 8,000 fc. summer; softcane: 55 deg.F. to 60 deg. nights, with 50% relative humidity and 3,000 fc. winter and 6,000 fc. summer. AU71-135 0
DENDROBIUM PHALAENOPSIS: New Growth Rots in July and September Several diseases can cause the injury; water early in the day and only enough. A72-55 0
DENDROBIUM PHALAENOPSIS: Old Canes If plump and good, keep on plant; if old and weak, remove. A69-1003 0
DENDROBIUM PHALAENOPSIS: Pot Size Relative to pseudobulb height; under four inches high (10 cm.) use pot two and three-quarters inch to three inch (7 cm.); canes four to eight inches high use three and a half inch pot; eight to fifteen inches high (20 to 35 cra.) use four inch pot; over fifteen inches high use five inch pot, A70-47 0
DENDROBIUM PHALAENOPSIS: Propagation Methods Those with runners or rhizomes can be divided like cattleyas; those like Den. lyonii can be split into clumps of pseudobulbs; pendulous types like Den. anosmum may be divided by means of keikis or by cutting the stems into pieces, each with several nodes and placing them on damp moss or coconut fibre in the shade. OD71-145; NH72(4)19+ 0
DENDROBIUM PHALAENOPSIS: The Gatton Way to Get Flowers Get them into vigorous growth in February; feed and grow until August with regular fertilizer; in August change to good potash fertilizer; reduce temperature ten to 15 degrees F. at same time for six weeks; return to warmth at night about October 1; bud growth should follow. OR78-242 0
DENDROBIUM PHALAENOPSIS: Too Tall Stunt them by removing the top three or four inches; flowering spike or keikis will appear. F70-116 0

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