As the temperatures soar in the summer, cool-season crops are always likely to bolt. It is a frustrating yet natural process, and one that gardeners consistently battle with year after year.
Vegetables, including lettuce, spinach, arugula, radishes, and Asian greens, bolt and start to flower when temperatures pass 70°F. However, there are ways to prevent bolting vegetables, such as proper watering, mulching, providing shade to your crops, and planting them at the right time.