FrostCal

When to Plant Brussels Sprouts in Delaware

In a typical Delaware location, start seeds indoors Feb 17 – Mar 3, then transplant outdoors Mar 17 – Mar 31. Across the state, the outdoor planting window starts as early as Mar 9 in Claymont and as late as Mar 29 in Hockessin.

Method Start indoors, then transplant
Days to maturity 90–110 days

Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Brussels Sprouts Planting Dates by City

CityStart indoorsTransplant
WilmingtonFeb 17 – Mar 3Mar 17 – Mar 31
DoverFeb 14 – Feb 28Mar 14 – Mar 28
NewarkFeb 17 – Mar 3Mar 17 – Mar 31
MiddletownFeb 17 – Mar 3Mar 17 – Mar 31
BearFeb 17 – Mar 3Mar 17 – Mar 31
BrooksideFeb 17 – Mar 3Mar 17 – Mar 31
GlasgowFeb 17 – Mar 3Mar 17 – Mar 31
HockessinMar 1 – Mar 15Mar 29 – Apr 12
SmyrnaFeb 14 – Feb 28Mar 14 – Mar 28
Pike Creek ValleyFeb 17 – Mar 3Mar 17 – Mar 31
MilfordFeb 21 – Mar 7Mar 21 – Apr 4
ClaymontFeb 9 – Feb 23Mar 9 – Mar 23
North StarFeb 17 – Mar 3Mar 17 – Mar 31
Pike CreekFeb 17 – Mar 3Mar 17 – Mar 31
Wilmington ManorFeb 17 – Mar 3Mar 17 – Mar 31
SeafordFeb 21 – Mar 7Mar 21 – Apr 4
GeorgetownFeb 14 – Feb 28Mar 14 – Mar 28
ElsmereFeb 17 – Mar 3Mar 17 – Mar 31
EdgemoorFeb 17 – Mar 3Mar 17 – Mar 31
New CastleFeb 17 – Mar 3Mar 17 – Mar 31

Showing the 20 most populous of 20 Delaware cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Delaware cities.

Frequently Asked Questions

When should I plant Brussels sprouts in Delaware?

In a typical Delaware location, start seeds indoors Feb 17 – Mar 3, then transplant outdoors Mar 17 – Mar 31. Across the state, the outdoor planting window starts as early as Mar 9 in Claymont and as late as Mar 29 in Hockessin.

When is the last frost in Delaware?

The average last spring frost in Delaware ranges from March 30 in Claymont to April 19 in Hockessin, based on NOAA 1991–2020 climate normals.

How long do Brussels sprouts take to grow?

Brussels Sprouts typically take 90–110 days from planting to harvest. Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Other Crops in Delaware

When to plant Brussels sprouts in other states

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