GrowZone

Seed-start answer

Start watermelon seeds indoors around Feb 19

In ZIP 75201, start watermelon seeds indoors around Feb 19, about 21 days before the Mar 12 last-frost estimate.

Source: dallas-love frost station, USDA zone 8b, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.

This uses ZIP 75201, the Dallas frost station, and the Mar 12 last-frost estimate.

Seed starting schedule

Watermelon dates for Dallas, TX

StepDateHow to use it
Start IndoorsFebruary 19, 2026Start seeds under lights or in a bright indoor seed-starting space.
Transplant OutdoorsMarch 26, 2026Move hardened-off seedlings outside after the frost-risk window.
Direct SowMarch 26, 2026Sow seed outside when the crop and soil can handle the window.