>Nels: > >Peppers will not set fruit - in fact the blossoms drop - if temps are >below 55 or about 90. > >There is a 10 - 30% gain in greenhouse temps during the day, so it's >likely your greenhouse temps will be above 100. > >You can solve this with shade cloth and ventiliation, though ventilation >alone will probabaly not be enough. Fans and shade cloth aren't a lot of help with pollination problems if the ambient temperature excedes 90 degress. You can solve this problem with an inexpensive misting system (mists the upper atmosphere of the greenhouse) that is automatically initiated when temperatures excede 8x degrees. -Allan (Makes the greenhouse more pleasant for the grower, also!)