When to plant summer squash / zucchini in Worcester
Summer squash / Zucchini is frost-tender, so every date keys off Worcester's last spring frost of Apr 21.
Step 1 · Sow
Start seeds indoors
Apr 16 – May 7
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 7 – Jun 28
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 22 – Aug 6
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Worcester's 180-day season leaves this much room.
Summer squash / Zucchini on Worcester's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
APR 21
OCT 22
Common questions
When can I sow summer squash / zucchini outdoors in Worcester?
Direct-sow around early June (Jun 7–Jun 28) in Worcester, based on its local frost dates. Confidence 83%.
When will summer squash / zucchini be ready to harvest in Worcester?
Expect to harvest from around late July (Jul 22–Aug 6) in Worcester, based on its local frost dates. Confidence 77%.
When should I start summer squash / zucchini seeds indoors in Worcester?
Start seeds indoors around mid April (Apr 16–May 7) in Worcester, based on its local frost dates. Confidence 82%.
When can I transplant summer squash / zucchini outdoors in Worcester?
Transplant outdoors around early June (Jun 7–Jun 28) in Worcester, based on its local frost dates. Confidence 83%.
How long is the growing season in Worcester?
Worcester has roughly 180 frost-free days, which is enough time to grow summer squash / zucchini to maturity outdoors.
The rule of thumb
Sow summer squash / zucchini 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Worcester's frost dates.
Confidence 86/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.