Arizona is vast, and its climate varies significantly. Here in Prescott, we are located in USDA Plant Hardiness Zone 8a, with winter lows typically ranging from 10 degrees to 15 degrees. This is crucial for selecting plants that will thrive in our cold nights.
Knowing your frost dates is just as important. In Prescott, our average last spring frost is around May 6, and the average first fall frost is about Oct. 29. This provides a growing season of approximately 176 days. It means you can plant tender annuals and vegetables the first week in May without worry, and you’ll want to harvest or protect them by November.
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