CATTLEYAS, BIFOLIATES: Flowers Get Smaller From Year to Year

Cattleya Alliance Orchid Doctor

by Robert M. Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 3 years ago.

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This is not unusual with plants grown in the home or under lights where a change in culture is involved contributing to a loss of vigour or energy; a greenhouse produces better flowers usually. A84-473
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CATTLEYAS, BIFOLIATES: Breeding Bifoliate yellows, bronzes and greens from Brazil, especially the importance and place of C. aclandiae, granulosa, velutina, forbesii; their pros and cons in breeding; habitats and cultivation in full sun. A85-1314; A86-691 0
CATTLEYAS, BIFOLIATES: Breeding for Whites If two whites are crossed and one has a C gene and the other an R gene the progeny will all be purple. F86-172 0
CATTLEYAS, BIFOLIATES: Bud Drop Can be caused by temperature too low for proper development or by a shortage of water, or by the presence of ethylene at a concentration of one part per million or more. OR82-101 0
CATTLEYAS, BIFOLIATES: Bud Rot in Sheath Caused by rise of amount of moisture in the sheath through excessive watering practice, or a rapid chamge in the temperature such as is caused by the winter sun in a cold greenhouse. F87-123 0
CATTLEYAS, BIFOLIATES: Change to Unifoliates Seedlings often show bifoliate ancestry but mature and flower as unifoliates. A84-1182; A87-950 0
CATTLEYAS, BIFOLIATES: Control of Flowering About June 1, cover the plants each night with black cloth draped over a rack completely at 5 P.M. and remove in the morning at 8 A.M.; flowers start in July and peak in August and September when most weddings occur. OIE85Sept-14 0
CATTLEYAS, BIFOLIATES: Cultural Problems Set Right For professional advice on light requirements, specific temperatures to use, watering practices, humidity levels, fertilizing routines, etc., with much related detail, refer to A83-129; 344;469;612 0
CATTLEYAS, BIFOLIATES: Culture of Seedlings When moved to single pots they differ from those in community pots by requiring slightly cooler temperatures, slightly brighter light and slightly less moisture. A87-615 0
CATTLEYAS, BIFOLIATES: Culture Problems Root problems, light problems, variations in flowering and sheathing, budding and malformations; for advice refer to A84-494 0
CATTLEYAS, BIFOLIATES: Flower Problems In December and January when most problems arise, the alliance is fussy about conditions necessary to produce good flowers because of the lack of light, etc.; good light, a steady supply of food and a buoyant atmosphere are hard to combine in overcast areas; growth becomes abnormal so additional artificial light and better air conditioning become inevitable. OR80-207 0
CATTLEYAS, BIFOLIATES: Hybrids Day length and temperatures necessary to induce buds: those with C. labiata or C. mossiae in their forbears usually flower during short days (fall, winter, spring) and can be controlled to flower twice a year with eight to ten weeks of short days; those with C. gigas forbears flower when the new growths mature and can11 be controlled; night temperatures of 55 to 60 dF favor flowering. A83-698 0
CATTLEYAS, BIFOLIATES: Light Requirements Some hybrids need short days and long nights in winter to initiate inflorescences. A87-33 0
CATTLEYAS, BIFOLIATES: New Growth Turn Black This could indicate starvation from loss of roots or overlong day lengths. A86-274 0
CATTLEYAS, BIFOLIATES: Stems Elongated and Weak A period of overcast days can cause flower stems to lengthen and hang down, expecially in long-stemmed types. A88-280 0

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