Explore LibraryStart free trial
← Plant Library

When to Plant Summer Squash in Zone 5

In USDA zone 5, start seeds indoors around April 14, transplant or plant outdoors May 19 to July 8, and expect your first harvest around July 8.

Summer Squash planting calendar for USDA Zone 5

🌱

Start seeds indoors

Apr 14

🌿

Transplant outdoors

May 19

🌾

Projected first harvest

Jul 8

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 5a — approximate

Most summer squash mature in about 50 days. Dates use USDA zone 5a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.

What zone 5 means for summer squash

Average last spring frost

May 5

Average first fall frost

October 1

Those two dates are what set the schedule above. Zone 5 gives you roughly 149 frost-free days, and summer squash need about 50 days to mature.

Varieties to grow

3 varieties of summer squash in the HomeSown library. Tap any for its full grow guide.

🌱 Grow summer squash with a calendar built for your exact yard

HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.

Start your free garden →