blissgarden.

When to plant radicchio in Delaware

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

Radicchio in Delaware: FAQ

When can I plant radicchio in Delaware?

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

Does the radicchio planting date vary across Delaware?

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

Radicchio takes about 60–90 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.

Planting reminders

Never miss a window in your area

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.

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