When to plant broccoli in Delaware

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.

Start indoors, Wilmington: Jan 27–Feb 10
Plant out, Wilmington: Mar 10–Mar 24
Fall planting, Wilmington: Aug 12–Aug 26
Last frost, Wilmington: Apr 7

Start seeds indoors 8–10 weeks before the last frost; plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Broccoli grown for a fall harvest often tastes sweeter than spring broccoli. Light frost improves it.

Broccoli 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 broccoli 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?

Start seeds indoors 8–10 weeks before the last frost; 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

Broccoli in other states

Frost dates for every city in Delaware