When to plant summer squash / zucchini in Charleston
Common questions
When can I sow summer squash / zucchini outdoors in Charleston?
Direct-sow around late March (Mar 30–Apr 20) in Charleston, based on its local frost dates. Confidence 86%.
When will summer squash / zucchini be ready to harvest in Charleston?
Expect to harvest from around mid May (May 14–May 29) in Charleston, based on its local frost dates. Confidence 80%.
When should I start summer squash / zucchini seeds indoors in Charleston?
Start seeds indoors around mid February (Feb 18–Mar 11) in Charleston, based on its local frost dates. Confidence 85%.
When can I transplant summer squash / zucchini outdoors in Charleston?
Transplant outdoors around late March (Mar 30–Apr 20) in Charleston, based on its local frost dates. Confidence 86%.
How long is the growing season in Charleston?
Charleston has roughly 310 frost-free days, which is enough time to grow summer squash / zucchini to maturity outdoors.
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 Charleston's frost dates.