A few summers ago, not a single one of my pole beans bloomed, which is odd because they are one of the most dependable, fuss-free things to grow. I later realized that it was simply too hot. Temperatures above 90°F slow down plant growth, and temperatures above 104°F put plants under serious heat stress. A plant under stress does not waste energy blooming—it’s in survival mode. Once the heat wave was over, the flowers on my beans appeared.
Heat waves are tough even for heat-tolerant and sun-loving plants such as tomatoes and watermelons, so it’s only natural when a garden takes a beating from record-high temperatures—even if you watered it properly during the heat wave.
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