When to Plant Watermelon in Utah
State
Utah
Cities Covered
250
USDA Zones
4a, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
Plant Type
Indoor Start
📅 Planting Calendar for Utah
Based on Altamont (Zone 5b). Dates may vary by city.
Note: Utah spans multiple zones (4a, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b). Select your city below for more precise dates.
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Growing Watermelon in Utah
Watermelon (Citrullus lanatus) is a popular garden vegetable in Utah. The state spans USDA Hardiness Zones 4a, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, so planting dates can vary significantly depending on your location.
For most of Utah, you should start Watermelon seeds indoors around Saturday, March 28, 2026, then transplant outdoors around Saturday, May 9, 2026.
For the most accurate planting dates, enter your ZIP code on our homepage or select your city from the list above.