Warm-season crops
Zucchini planting calendar and growing plan
Zucchini is treated as summer squash, with separate direct-sowing and transplant references. Its large footprint makes space planning as important as choosing a start date.
Plan dates for Zucchini
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 squash row of the selected nursery chart is used for this summer-squash record.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- Move young summer-squash plants carefully; damaged roots can delay establishment.
Use young transplants and the source conditions instead of keeping an oversized plant in a small pot.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- Move young summer-squash plants carefully; damaged roots can delay establishment.
This is an earliest reference boundary, conditional on warm soil; it is not a complete sowing season.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- Wait until after last frost and until soil is at least 70°F at two inches deep.
A planning reference, not a weather forecast.
Protect the short start
Young squash plants can suffer when their roots are disturbed. A nursery start is an option, not a requirement to hold plants indoors until they become large.
Reserve the real footprint
The selected row system uses one transplant per point. Do not substitute the much closer seed spacing mentioned for other squash habits. Leave harvesting access outside the occupied plant area.
Spread the sowing workload
A later batch can replace an earlier planting, but the source interval is only a planning reference. Record whether the next batch uses new space or follows removal of the old plants.
Questions growers ask
Is the repeat interval the same as the harvest interval?
No. It schedules another sowing. Picking fruit from an existing zucchini plant is a separate activity and does not create another crop batch.
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.
Succession Planting Charts for Vegetables ↗
General intervals under standard growing practices. Crop purpose and protected-cover exceptions matter; these are not harvest guarantees.
Growing summer squash and zucchini in home gardens ↗
Minnesota home gardens; summer squash establishment and warm-soil conditions.
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.