according the the orchid doctor:
Quote:
REST: Is it Necessary? Many orchids experience definite wet and dry periods in their native haunts but it is not necessarily the best way to treat them under cultivation; pseudobulbs from wet/dry areas can be tripled in size by watering and fertilizing year round; an Oncidium ornothorrhynchum improved its growth by being deprived of its rest period. A84-17
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Quote:
REST PERIOD: Necessity for The idea that all orchids need a rest period is a fallacy; not necessary for many modern hybrids; a good practice is to water all plants with good green leaves. A68-431
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Quote:
REST PERIOD: Not Necessary for Plants Growing Under Optimum Conditions With few exceptions (such as the deciduous dendrobiums) the generalization about the necessity for a rest period is questionable; proper feeding and climate should bring frequent flowerings not injurious to a plant. A73-909
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I just came across that yesterday..
So catasetums and deciduous dendrobiums need rest but with Cattleya's it's a fallacy? Or is it just the cattleya hybrids?
I know neofinetia don't need a rest when care guides state they do.
I can't add anything to the C. warscewiczii.
The orchid doc also says the way to get Trianae and Labiata to flower is to give them less than 14 hours of light in winter. No mention of a rest, too long light hours in winter prevents flowering with them.