Warm-season crops
Winter squash planting calendar and growing plan
Winter squash needs a plan for establishment and for a spreading plant footprint. The name describes the storage crop, not a recommendation to sow in winter.
Plan dates for Winter squash
Editable exampleTransplant outside
May 15, 2027 Suggested windowDirect sow
May 1, 2027 Earliest referencePaired transplant date (optional)
| Transplant outside | Start indoors |
|---|---|
| May 15, 2027 | Apr 17 – 24, 2027 |
Sowing windows combine possible transplant dates. Choose a paired transplant date to narrow the nursery window. Wait for suitable soil and local conditions.
Direct sowing and transplanting are alternative ways to start a crop. Keep the tasks that match your method.
Sources and conditions
The nursery chart’s general squash row is selected; check cultivar-specific instructions.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- Use hardened young transplants and soil of at least 65°F.
The setting-out reference is separate from the longer time a storage squash may need to ripen.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- Use hardened young transplants and soil of at least 65°F.
The zero-day reference marks frost danger passing. The source also requires suitable soil warmth.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- The frost boundary is only a reference; soil must be warm enough for germination.
A planning reference, not a weather forecast.
Start from the spring reference
The general squash nursery row provides one transplant option. The direct-sowing boundary also requires warm soil. Choose a cultivar that fits your usable season before relying on either route.
Match space to growth habit
The spacing source covers a range of plant habits. The example uses its wider choices for spreading plants; a compact bush variety may justify a documented override.
Keep harvest planning separate
A frost-based sowing calculator does not establish maturity or storage quality. Save the variety and packet guidance with the plan. This record leaves the late-sowing cutoff unfilled instead of inventing one.
Questions growers ask
Why is there no automatic autumn cutoff?
The reviewed record does not contain one that applies across winter-squash varieties and growing conditions. Add a supported local end date when planning a late crop.
Sources and conditions
These sources describe particular climates and growing methods. Use the conditions alongside the numbers.
Seed-Starting Date Calculator ↗
General nursery and setting-out reference, using a user-supplied spring frost-free date. Nursery duration is measured before setting out.
Growing pumpkins and winter squash in home gardens ↗
Minnesota home gardens; spacing depends on bush or spreading growth habit.
How to Grow Summer and Winter Squash in Your Garden ↗
Summer-squash transplant row spacing and outdoor frost boundary; protected early planting is a separate method.