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Can You Grow Cauliflower in Arizona?
US · USDA Zone 9a · zones 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a
Cauliflower grows well here if you time it for your cool season — fall crops are often more reliable than spring.
Plant zones
Arizona last frost
Arizona first frost
Days to harvest
When to plant Cauliflowers in Arizona
Start indoors
Transplant
Harvest
Dates are approximate, based on Arizona's average frost dates. Your exact yard may vary by microclimate.
About Cauliflower
Cauliflower is one of the most rewarding cool-season brassicas — and one of the trickiest. It forms a dense white head that needs steady cool weather and consistent moisture.
Start indoors 6 weeks before last frost; transplant 2-3 weeks before last frost. Blanch heads by tying leaves over them once they're 2-3 inches across. Harvest before curds loosen.
Gardening in Arizona
Arizona spans dramatic climate zones from cool mountain forests to hot desert. Low-elevation cities like Phoenix grow year-round; high-elevation areas are Zone 5-6.
Frequently asked questions
Can you grow Cauliflower in Arizona?
Cauliflower grows well here if you time it for your cool season — fall crops are often more reliable than spring.
What zone is Arizona?
Arizona spans USDA Zone 9a (4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a).
When do you plant Cauliflowers in Arizona?
Plant Cauliflowers around late January (start indoors Jan 1), harvest Mar 21 – Apr 30.