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When to plant celery in Delaware

Delaware spans USDA zones 7a–7b, so the right time to plant celery shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 21 in Dover to March 28 in Milford — below are local dates for 11 cities, each computed from its own frost dates.

In Wilmingtonthe celery transplant out window (March 24–April 7) has passed for this year.
CityZoneLast frostFirst frostTransplant out
Wilmington7bApril 7November 4March 24 – April 7
Dover7bApril 4November 4March 21 – April 4
Newark7bApril 7November 2March 24 – April 7
Middletown7bApril 7November 2March 24 – April 7
Bear7bApril 7November 2March 24 – April 7
Glasgow7bApril 7November 2March 24 – April 7
Brookside7bApril 7November 2March 24 – April 7
Hockessin7aApril 7November 4March 24 – April 7

Celery in Delaware: FAQ

When can I plant celery in Delaware?

Across Delaware, the time to transplant celery spans roughly March 21 in Dover to March 28 in Milford, each following that city's local frost dates.

Does the celery planting date vary across Delaware?

Yes. Delaware publishes 11 cities with their own frost dates, so the right celery planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.

How long does celery take to grow in Delaware?

Celery takes about 80–120 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.

Planting reminders

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An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.

Celery planting guide →All Delaware cities →Delaware planting calendar →
When to Plant Celery in Delaware — Frost-Based Dates by City — BlissGarden