I don't think there is a simple answer to your question since orchids
are so different in their natural lighting environments and probably
adapt over time to changes in the environment. If we could only see
them in their natural habitat that would give us some clues as to what
ideal conditions are.

On Apr 13, 11:01*pm, K Barrett wrote:
I go back and forth as to whether its duration or intensity of light tat
makes our plants bloom.. I think the answer is *qualified 'yes' but if
one was to err I think it would be on intensity rather than duration..
I think plants need a minimum of light but it has to be of a certain
intensity. *8 hours of non sufficient light isn't equal to 8 hours of
intense light.

Or am I nuts,?

Has anyone any input on intensity vs duration?\

K Barrett