When to plant cauliflower in Delaware

Cauliflower
Plant out in Wilmington
Mar 24–Apr 7

Across Delaware the window opens between March 21 and March 24. 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 24–Apr 7
Fall planting, Wilmington
Aug 12–Aug 26
Last frost, Wilmington
Apr 7

Start seeds indoors 8–10 weeks before the last frost; plant out up to 2 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. When heads reach the size of an egg, tie the leaves over them to keep them white.

Cauliflower planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
WilmingtonMar 24–Apr 7
DoverMar 21–Apr 4
NewarkMar 24–Apr 7
MiddletownMar 24–Apr 7
BearMar 24–Apr 7

Questions

When should I plant cauliflower in Delaware?

In Wilmington, plant out from March 24 to April 7. Across Delaware the window opens between March 21 and March 24, depending on the local last frost.

How is this date worked out?

Start seeds indoors 8–10 weeks before the last frost; plant out up to 2 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

Cauliflower in other states

Frost dates for every city in Delaware