On Sat, 07 Jun 2003 03:00:43 GMT, Repeating Decimal wrote
in rec.gardens.edible:

In the morning, there sometimes are water droplets on the leaves. Can that
be the problem.

Yes. Try to keep the leaves dry.

I cannot answer the rest of your questions as I do not have a green house.
--
Gardening Zones
Canada Zone 5a
United States Zone 3a
Near Ottawa, Ontario