I found out last year that high temperatures sterilize tomato and pepper pollen.
I was trying to grow, from start to finish, my toms and peppers in my greenhouse for the 1st time.
I was having success with my tomatoes but my peppers were blooming and not setting peppers. I had them suspended from the ceiling and the tomatoes were in the beds.
The greenhouse vents open automatically around 85-90 degrees but the ceiling stays hot....sometimes close to 100 even with the vent open.
I did some research and found out that Temps over 90 (I think the number was 93) sterilize the pepper and tomato pollen and you get blossoms but no fruit set.
I took the peppers down and put them at a lower level and viola.....peppers popped within a couple of weeks.
They will not set fruit at that temp. Which is rare here.
Meanwhile here is another cross thread: Gardening Essentials | Vermiculite The How Do Gardener ^ |
I had heard that peppers quit producing when temps get above 90 but did not know why.
That is useful information. Problem is, you cannot control the outside temperatures.