When to plant collards in Delaware
Delaware spans USDA zones 7a–7b, so the right time to plant collards shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 7 in Dover to March 14 in Milford — below are local dates for 11 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Wilmington | 7b | April 7 | November 4 | March 10 – March 24 |
| Dover | 7b | April 4 | November 4 | March 7 – March 21 |
| Newark | 7b | April 7 | November 2 | March 10 – March 24 |
| Middletown | 7b | April 7 | November 2 | March 10 – March 24 |
| Bear | 7b | April 7 | November 2 | March 10 – March 24 |
| Glasgow | 7b | April 7 | November 2 | March 10 – March 24 |
| Brookside | 7b | April 7 | November 2 | March 10 – March 24 |
| Hockessin | 7a | April 7 | November 4 | March 10 – March 24 |
Collards in Delaware: FAQ
When can I plant collards in Delaware?
Across Delaware, the time to transplant collards spans roughly March 7 in Dover to March 14 in Milford, each following that city's local frost dates.
Does the collards planting date vary across Delaware?
Yes. Delaware publishes 11 cities with their own frost dates, so the right collards 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 collards take to grow in Delaware?
Collards takes about 55–75 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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.