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When to plant napa cabbage in Delaware

Delaware spans USDA zones 7a–7b, so the right time to plant napa cabbage 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 napa cabbage 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

Napa Cabbage in Delaware: FAQ

When can I plant napa cabbage in Delaware?

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

Does the napa cabbage planting date vary across Delaware?

Yes. Delaware publishes 11 cities with their own frost dates, so the right napa cabbage 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 napa cabbage take to grow in Delaware?

Napa Cabbage takes about 70–85 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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Napa Cabbage planting guide →All Delaware cities →Delaware planting calendar →
When to Plant Napa Cabbage in Delaware — Frost-Based Dates by City — BlissGarden