Cool-season crops
Leek planting calendar and growing plan
Leeks use an indoor-to-transplant plan in this record. Their long season makes the chosen variety and nursery schedule useful details to save.
Plan dates for Leek
Editable exampleTransplant outside
Apr 17, 2027 Suggested windowDirect sow
A reviewed rule is not available for this action. StatusPaired transplant date (optional)
| Transplant outside | Start indoors |
|---|---|
| Apr 17, 2027 | Feb 6 – 20, 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 chart uses eight to ten weeks before setting out. Longer nursery advice elsewhere is kept separate.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- Set out when spring weather has settled and daytime temperatures are at least 45°F.
The setting-out offset remains conditional on settled spring weather and adequate daytime temperature.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- Set out when spring weather has settled and daytime temperatures are at least 45°F.
This leek record does not supply a numeric direct-sowing window.
- These are reviewed planning references. Check the variety, local soil and weather before acting; a frost date is not a forecast.
- No numeric direct-sowing window is reviewed in this transplant-led leek record.
A planning reference, not a weather forecast.
Check the outdoor conditions
The source requires settled spring weather and a minimum daytime temperature. A calculated setting-out date remains conditional on those local observations.
Space with leaf direction in mind
The source’s closer arrangements depend on leaves growing into the between-row space. The example selects a roomier in-row value and preserves the full range for review.
Leave unsupported dates empty
The current record has no reviewed numerical direct-sowing window or autumn sowing cutoff. Those fields stay explicit coverage gaps, rather than being filled with another allium’s rule.
Questions growers ask
Does the missing autumn cutoff mean leeks cannot grow in fall?
No. It means this record has not reviewed a cutoff for the selected conditions. Harvesting established leeks in cold weather is a different question from scheduling a new sowing.
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 leeks in home gardens ↗
Northern home gardens; transplant conditions and spacing. No automatic autumn sowing cutoff is taken from this guide.