FrostCal

When to Plant Zucchini in Connecticut

In a typical Connecticut location, start seeds indoors Mar 28 – Apr 4, then sow outdoors Apr 25 – May 9, then transplant outdoors Apr 25 – May 2. Across the state, the outdoor planting window starts as early as Apr 12 in Bridgeport and as late as May 15 in Torrington.

Method Direct sow
Days to maturity 45–55 days

Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Zucchini Planting Dates by City

CityStart indoorsDirect sowTransplant
BridgeportMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
New HavenMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
StamfordMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
North StamfordMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
HartfordMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
WaterburyApr 5 – Apr 12May 3 – May 17May 3 – May 10
NorwalkMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
DanburyMar 30 – Apr 6Apr 27 – May 11Apr 27 – May 4
East NorwalkMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
New BritainMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
West HartfordMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
BristolApr 4 – Apr 11May 2 – May 16May 2 – May 9
MeridenApr 5 – Apr 12May 3 – May 17May 3 – May 10
HamdenMar 28 – Apr 4Apr 25 – May 9Apr 25 – May 2
FairfieldMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
West HavenMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
MilfordMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
StratfordMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
City of Milford (balance)Mar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
East HartfordMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
MiddletownApr 5 – Apr 12May 3 – May 17May 3 – May 10
EnfieldMar 31 – Apr 7Apr 28 – May 12Apr 28 – May 5
SouthingtonApr 5 – Apr 12May 3 – May 17May 3 – May 10
SheltonApr 4 – Apr 11May 2 – May 16May 2 – May 9
NorwichMar 24 – Mar 31Apr 21 – May 5Apr 21 – Apr 28
TrumbullMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
West TorringtonApr 17 – Apr 24May 15 – May 29May 15 – May 22
TorringtonApr 17 – Apr 24May 15 – May 29May 15 – May 22
GlastonburyMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
NaugatuckMar 28 – Apr 4Apr 25 – May 9Apr 25 – May 2

Showing the 30 most populous of 86 Connecticut cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Connecticut cities.

Frequently Asked Questions

When should I plant zucchini in Connecticut?

In a typical Connecticut location, start seeds indoors Mar 28 – Apr 4, then sow outdoors Apr 25 – May 9, then transplant outdoors Apr 25 – May 2. Across the state, the outdoor planting window starts as early as Apr 12 in Bridgeport and as late as May 15 in Torrington.

When is the last frost in Connecticut?

The average last spring frost in Connecticut ranges from April 5 in Bridgeport to May 8 in Torrington, based on NOAA 1991–2020 climate normals.

How long do zucchini take to grow?

Zucchini typically take 45–55 days from planting to harvest. Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Other Crops in Connecticut

When to plant zucchini in other states

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