When to plant summer squash / zucchini in Jackson
Summer squash / Zucchini is frost-tender, so every date keys off Jackson's last spring frost of Mar 3.
Step 1 · Sow
Start seeds indoors
Mar 1 – Mar 22
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 25 – Apr 15
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 9 – May 24
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Jackson's 267-day season leaves this much room.
Summer squash / Zucchini on Jackson'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
MAR 3
NOV 20
Common questions
When can I sow summer squash / zucchini outdoors in Jackson?
Direct-sow around late March (Mar 25–Apr 15) in Jackson, based on its local frost dates. Confidence 80%.
When will summer squash / zucchini be ready to harvest in Jackson?
Expect to harvest from around early May (May 9–May 24) in Jackson, based on its local frost dates. Confidence 74%.
When should I start summer squash / zucchini seeds indoors in Jackson?
Start seeds indoors around early March (Mar 1–Mar 22) in Jackson, based on its local frost dates. Confidence 78%.
When can I transplant summer squash / zucchini outdoors in Jackson?
Transplant outdoors around late March (Mar 25–Apr 15) in Jackson, based on its local frost dates. Confidence 80%.
How long is the growing season in Jackson?
Jackson has roughly 267 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 Jackson's frost dates.
Confidence 82/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.