When to plant collard greens in Delaware

Collard greens
Plant out in Wilmington
Mar 10–Mar 24

Across Delaware the window opens between March 7 and March 10. Find your city below; the dates follow each town's own average last frost.

Plant out, Wilmington
Mar 10–Mar 24
Fall planting, Wilmington
Aug 12–Aug 26
Last frost, Wilmington
Apr 7

Plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Collards handle both heat and frost better than most greens.

Collard greens planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
WilmingtonMar 10–Mar 24
DoverMar 7–Mar 21
NewarkMar 10–Mar 24
MiddletownMar 10–Mar 24
BearMar 10–Mar 24

Questions

When should I plant collard greens in Delaware?

In Wilmington, plant out from March 10 to March 24. Across Delaware the window opens between March 7 and March 10, depending on the local last frost.

How is this date worked out?

Plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Delaware

Collard greens in other states

Frost dates for every city in Delaware