9b When to plant zucchini & summer squash in zone 9b
Zone 9b median last spring freeze: Feb 7 · first fall freeze: Dec 10 · harvest in ~45-60 days.
| Step | Zone 9b dates | Note |
|---|---|---|
| Start seeds indoors | Jan 17 – Jan 31 | 6–10 weeks before transplanting |
| Transplant outside | Feb 14 | after last spring freeze |
| Direct sow (spring) | Jan 31 | before last spring freeze |
How zucchini & summer squash grow in zone 9b
Direct sow or transplant both work. Tender — damaged by any frost. Harvest runs roughly 45-60 days after planting. These windows come from extension planting tables anchored to zone 9b's median freeze dates — for varieties and local conditions, check with your local extension office.
Next: the full zone 9b calendar · other crops in zone 9b: tomatoes · peppers · cucumbers · winter squash & pumpkins · snap beans · sweet corn · peas · lettuce · spinach · 5 more