🟡 When to Plant Squash (Summer)
Direct sow after frost danger passes
📅 Planting Calendar by USDA Zone
Squash (Summer) is a warm-season crop — plant it after your last spring frost, once the soil has warmed, and start seeds indoors a few weeks ahead for a head start. Find the exact start-indoors, transplant, and direct-sow dates for your USDA zone in the table below.
Select your zone to highlight your dates. All dates are calculated from each zone's average frost dates — see how we calculate them.
| Zone | Last Frost | Start Indoors | Transplant | Direct Sow |
|---|---|---|---|---|
| Zone 2A | May 30 | May 2 | May 30 | Jun 13 |
| Zone 3B | May 15 | Apr 17 | May 15 | May 29 |
| Zone 4A | May 8 | Apr 10 | May 8 | May 22 |
| Zone 4B | May 1 | Apr 3 | May 1 | May 15 |
| Zone 5A | Apr 25 | Mar 28 | Apr 25 | May 9 |
| Zone 5B | Apr 18 | Mar 21 | Apr 18 | May 2 |
| Zone 6A | Apr 21 | Mar 24 | Apr 21 | May 5 |
| Zone 6B | Apr 10 | Mar 13 | Apr 10 | Apr 24 |
| Zone 7A | Apr 5 | Mar 8 | Apr 5 | Apr 19 |
| Zone 7B | Mar 28 | Feb 28 | Mar 28 | Apr 11 |
| Zone 8A | Mar 20 | Feb 20 | Mar 20 | Apr 3 |
| Zone 8B | Mar 12 | Feb 12 | Mar 12 | Mar 26 |
| Zone 9A | Feb 28 | Jan 31 | Feb 28 | Mar 14 |
| Zone 9B | Feb 15 | Jan 18 | Feb 15 | Mar 1 |
| Zone 10A | Feb 1 | Jan 4 | Feb 1 | Feb 15 |
| Zone 10B | Jan 15 | Dec 18 | Jan 15 | Jan 29 |
| Zone 11A | Jan 1 | Dec 4 | Jan 1 | Jan 15 |
Summer squash including yellow squash and pattypan grows fast and produces prolifically in warm weather.
Top Growing Tips
- Direct sow after all frost danger has passed
- Space plants 3-4 feet apart for air circulation
- Harvest when small (6-8 inches) for best flavor
- Watch for squash vine borers — wrap stems with foil
- Pick every 2 days to keep plants producing
Companion Planting
Good companions: corn, beans (Three Sisters), nasturtiums, marigolds
Avoid planting near: potatoes
Harvest Timeline
45-55 days from seed
Growing squash (summer) in your region?
These dates come from your zone's frost windows. For the full month-by-month plan — succession sowing, variety picks, and timing tuned to your climate, not just your zone — our regional vegetable-gardening guides cover your area start to finish.
Find your regional growing guide