When to plant summer squash / zucchini in Plano
Summer squash / Zucchini is frost-tender, so every date keys off Plano's last spring frost of Mar 13.
Step 1 · Sow
Start seeds indoors
Mar 19 – Apr 9
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 11 – May 2
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 26 – Jun 10
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Plano's 250-day season leaves this much room.
Summer squash / Zucchini on Plano'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 13
NOV 23
Common questions
When can I sow summer squash / zucchini outdoors in Plano?
Direct-sow around mid April (Apr 11–May 2) in Plano, based on its local frost dates. Confidence 80%.
When will summer squash / zucchini be ready to harvest in Plano?
Expect to harvest from around late May (May 26–Jun 10) in Plano, based on its local frost dates. Confidence 74%.
When should I start summer squash / zucchini seeds indoors in Plano?
Start seeds indoors around mid March (Mar 19–Apr 9) in Plano, based on its local frost dates. Confidence 78%.
When can I transplant summer squash / zucchini outdoors in Plano?
Transplant outdoors around mid April (Apr 11–May 2) in Plano, based on its local frost dates. Confidence 80%.
How long is the growing season in Plano?
Plano has roughly 250 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 Plano's frost dates.
Confidence 82/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.