When to plant summer squash / zucchini in Irving
Summer squash / Zucchini is frost-tender, so every date keys off Irving's last spring frost of Mar 3.
Step 1 · Sow
Start seeds indoors
Mar 7 – Mar 28
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 28 – Apr 18
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 12 – May 27
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Irving's 276-day season leaves this much room.
Summer squash / Zucchini on Irving'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 28
Common questions
When can I sow summer squash / zucchini outdoors in Irving?
Direct-sow around late March (Mar 28–Apr 18) in Irving, based on its local frost dates. Confidence 89%.
When will summer squash / zucchini be ready to harvest in Irving?
Expect to harvest from around mid May (May 12–May 27) in Irving, based on its local frost dates. Confidence 80%.
When should I start summer squash / zucchini seeds indoors in Irving?
Start seeds indoors around early March (Mar 7–Mar 28) in Irving, based on its local frost dates. Confidence 85%.
When can I transplant summer squash / zucchini outdoors in Irving?
Transplant outdoors around late March (Mar 28–Apr 18) in Irving, based on its local frost dates. Confidence 89%.
How long is the growing season in Irving?
Irving has roughly 276 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 Irving's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.