FrostCal

When to Plant Nasturtiums in Delaware

In a typical Delaware location, sow outdoors Apr 14 – Apr 28. Across the state, the outdoor planting window starts as early as Apr 6 in Claymont and as late as Apr 26 in Hockessin.

Method Direct sow
Days to maturity 50–65 days

Frost-tender, resents root disturbance; direct sow 1-3 weeks after last frost once soil has warmed.

Nasturtiums Planting Dates by City

CityDirect sow
WilmingtonApr 14 – Apr 28
DoverApr 11 – Apr 25
NewarkApr 14 – Apr 28
MiddletownApr 14 – Apr 28
BearApr 14 – Apr 28
BrooksideApr 14 – Apr 28
GlasgowApr 14 – Apr 28
HockessinApr 26 – May 10
SmyrnaApr 11 – Apr 25
Pike Creek ValleyApr 14 – Apr 28
MilfordApr 18 – May 2
ClaymontApr 6 – Apr 20
North StarApr 14 – Apr 28
Pike CreekApr 14 – Apr 28
Wilmington ManorApr 14 – Apr 28
SeafordApr 18 – May 2
GeorgetownApr 11 – Apr 25
ElsmereApr 14 – Apr 28
EdgemoorApr 14 – Apr 28
New CastleApr 14 – Apr 28

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 nasturtiums in Delaware?

In a typical Delaware location, sow outdoors Apr 14 – Apr 28. Across the state, the outdoor planting window starts as early as Apr 6 in Claymont and as late as Apr 26 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 nasturtiums take to grow?

Nasturtiums typically take 50–65 days from planting to harvest. Frost-tender, resents root disturbance; direct sow 1-3 weeks after last frost once soil has warmed.

Other Crops in Delaware

When to plant nasturtiums in other states

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