Lettuce grown to form a head, distinct from loose-leaf harvests.
Choose the region that actually covers your garden. These source references are not a nationwide planting calendar.
2–4 weeks before the spring frost reference
The source anchor is the average last spring frost. Use this as an approximate regional starting point.
A NOAA station’s median 32°F freeze date is a different measure. Substituting it is an application calculation, not a published local calendar.
Use the Central North Carolina calendar, with its separate establishment methods. This is not a calendar for every part of North Carolina.
Use the Florida calendar for your specific subregion. Planting months are not interchangeable across the state.
Grouped source row: the calendar covers more than one crop type. It does not establish a separate cultivar-specific schedule.
Table 2 limits crisphead lettuce to the coolest months in Florida; the shared Lettuce calendar must not imply that every lettuce type performs equally throughout it.
Outside these regions? Use your local Extension planting guidance. A nearby weather station describes climate; it does not establish whether or when to plant this crop.
These ranges start at different stages. Keep the method, region, and crop type attached to every number.
Count from setting out transplants. The earlier nursery period is excluded.
Count from seed sown directly in the garden.
A transplant has a head start. Days counted from transplanting leave out time spent raising the seedling. Use a separate seed-starting reference if you plan to raise your own plants.
Maturity references vary with cultivar, harvest size, weather, and establishment method. Keep your seed packet or transplant label alongside the regional calendar.
No verified value
in this guide.
We have not assigned a germination minimum for head lettuce. Use crop-specific local guidance for your planting material and method.
Selected source facts reviewed . This is our review date, not the sources’ publication date.
How we use the data