Tomato calendar pages cover timing to avoid temperature extremes.
Vegetable Gardening
Why are my tomatoes not setting fruit?
Common causes: temperature outside 55-90°F range (blossom drop), excessive nitrogen (leafy growth, no fruit), inadequate pollination (low bee activity), and water stress (dry-wet cycles). Cool nights below 55°F or hot days above 90°F suppress fruit set. Once temperatures stabilize, fruit set resumes.
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