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ZIP 23451 planting calendar

When to plant watermelon in Virginia Beach, VA - Zone 8b

In ZIP 23451, plant watermelon around Apr 15; this uses the Virginia Beach frost station, USDA zone 8b, and watermelon timing rules.

Your Virginia Beach calendar has a 228-day estimated frost-free season. This estimate uses the representative Virginia Beach frost station, USDA zone 8b, and watermelon timing rules.

Source: virginia-beach-oceana 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 virginia-beach-oceana frost station and USDA zone 8b, last updated 2026-06-28.

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

USDA zone 8b Virginia Beach frost station Virginia Cooperative Extension Updated 2026-06-28
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Answer first

When to start watermelon seeds indoors in Virginia Beach

In ZIP 23451, start watermelon seeds indoors around Mar 11, about 21 days before the Apr 1 last-frost estimate.

Start watermelon seeds indoors in Virginia Beach around Mar 11, about 21 days before the Apr 1 last-frost estimate.

Seed starting schedule

Watermelon dates for Virginia Beach, VA

StepDateHow to use it
Start IndoorsMarch 11, 2026Start seeds under lights or in a bright indoor seed-starting space.
Transplant OutdoorsApril 15, 2026Move hardened-off seedlings outside after the frost-risk window.
Direct SowApril 15, 2026Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Virginia Beach?

Virginia Beach (ZIP 23451) has an average last spring frost around Apr 1.

First frost

When is the first frost in Virginia Beach?

The average first fall frost is around Nov 15, giving about 228 frost-free days.

Season map

Watermelon windows by month

JanFebMarAprMayJunJulAugSepOctNovDec
Start indoors
Mar 11
Direct sow
Apr 15
Transplant
Apr 15
Harvest
Jul 14
Frost watch
Aug 17

Reminder workflow

Every date has a next action

Start watermelon indoorsMar 11
Last frost windowApr 1
Direct sow watermelonApr 15
Transplant watermelonApr 15
First watermelon harvest windowJul 14
Last watermelon sowing targetAug 17
SignalValueWhy it matters
Last frost estimateApril 1, 2026Warm-season transplant risk starts falling after this window.
First frost estimateNovember 15, 2026Fall planting counts backward from this date.
Season length228 daysLonger seasons can support succession crops.
Spacing36-60 inAirflow and root space affect yield.
Soil temperature70 F+Seeds and transplants stall in cold soil.

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Local data

Why this date changes by ZIP

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

Virginia Cooperative 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 15. A conservative last sowing target is around Aug 17.