When should I plant watermelon in ZIP 76010?

In ZIP 76010, the main watermelon target is around Mar 26, based on the representative Dallas frost station and USDA zone 8b.

When should I start watermelon seeds indoors in 76010?

Start watermelon seeds indoors in ZIP 76010 around Feb 19, about 21 days before the Mar 12 last-frost estimate.

Is this a guaranteed planting date?

No. GrowZone uses frost-date estimates, hardiness zones, and crop timing rules for planning. Local microclimates and current weather can shift the right date.

ZIP 76010 planting calendar

When to plant watermelon in Arlington, TX - Zone 8b

Q: When is the first frost in Arlington?

Arlington (ZIP 76010) has an average first fall frost around Nov 22, leaving about 255 frost-free days.

In ZIP 76010, plant watermelon around Mar 26; this uses the Dallas frost station, USDA zone 8b, and watermelon timing rules.

Your Dallas calendar has a 255-day estimated frost-free season. This estimate uses the representative Dallas frost station, USDA zone 8b, and watermelon timing rules.

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.

Reviewed by GrowZone Editorial. Calculated from the dallas-love frost station and USDA zone 8b, last updated 2026-06-28.

In the Arlington area, watermelon timing follows the Dallas frost window, so the local ZIP date can differ from a broad zone-only calendar.

USDA zone 8b Dallas frost station Texas A&M AgriLife Extension Updated 2026-06-28

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Answer first

When to start watermelon seeds indoors in Arlington

In ZIP 76010, start watermelon seeds indoors around Feb 19, about 21 days before the Mar 12 last-frost estimate.

Start watermelon seeds indoors in Arlington around Feb 19, about 21 days before the Mar 12 last-frost estimate.

Seed starting schedule

Watermelon dates for Arlington, TX

Step	Date	How to use it
Start Indoors	February 19, 2026	Start seeds under lights or in a bright indoor seed-starting space.
Transplant Outdoors	March 26, 2026	Move hardened-off seedlings outside after the frost-risk window.
Direct Sow	March 26, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Arlington?

Arlington (ZIP 76010) has an average last spring frost around Mar 12.

First frost

When is the first frost in Arlington?

The average first fall frost is around Nov 22, giving about 255 frost-free days.

Season map

Watermelon windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Start indoors

Feb 19

Direct sow

Mar 26

Transplant

Mar 26

Harvest

Jun 24

Frost watch

Aug 24

Reminder workflow

Every date has a next action

Start watermelon indoorsFeb 19

Last frost windowMar 12

Direct sow watermelonMar 26

Transplant watermelonMar 26

First watermelon harvest windowJun 24

Last watermelon sowing targetAug 24

Signal	Value	Why it matters
Last frost estimate	March 12, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	November 22, 2026	Fall planting counts backward from this date.
Season length	255 days	Longer seasons can support succession crops.
Spacing	36-60 in	Airflow and root space affect yield.
Soil temperature	70 F+	Seeds and transplants stall in cold soil.

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Local data

Why this date changes by ZIP

Dallas frost history and USDA zone 8b shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

Texas A&M AgriLife Extension is the kind of local source to verify against when a crop is expensive, weather is unusual, or your yard has a cold pocket.

Crop note

Watermelon timing notes

Wait for warm soil; watermelon stalls when nights stay cool. Watermelon prefers full sun, 36-60 in spacing, and soil near 70 F+.

For fall, count backward from Nov 22. A conservative last sowing target is around Aug 24.