Quote:
Originally Posted by MrBig46
University of Florida website:
Low temperature: Interference with the growth of pollen tubes prevents normal fertilization. The pollen may even become sterile, causing blossoms to drop. Tomato fruit will not set until nighttime temperature is above 55oF for at least 2 nights in a row.
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This is not true, my Sungold is setting tomatoes and night temps are between about 39 - 49 all the time 7 days a week.
The 1st one set on May the 4th, when I used a pollination device ( electric toothbrush ) on it and I seen a puff of pollen. A few days later a tomato appeared.
Im positive Gardeners Delight and many of the other varieties I have grown in the last 4 years also set tomatoes well before night time temps are 55 F.