When to Plant Watermelon in Texas

Growing Watermelon in Texas: Complete Guide

Watermelon (Citrullus lanatus) is a warm-season crop that needs a head start indoors before Texas's last frost. Depending on your zone, Texas gardeners start seeds indoors between December 18, 2026 (Zone 10b) and March 18, 2027 (Zone 6b), then move transplants outside once their zone's last frost has passed — the zone table above has your exact dates.

Because Texas stretches across 9 USDA hardiness zones (6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b), planting windows can shift by as much as six to eight weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 80 days to maturity, Watermelon needs the indoor head start that Texas's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Watermelon requires full sun (8+ hours) and regular (1-2 inches/week) moisture. Gulf Coast gardeners face intense summer heat and humidity — afternoon shade and consistent irrigation are key to success.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Texas.