Published regional calendar
Central North Carolina
Use the Central North Carolina calendar, with its separate establishment methods. This is not a calendar for every part of North Carolina.
- Published crop row
- Leek
The growing library
When to plant
leeks.
An allium whose seed-to-harvest interval includes a long nursery stage.
01 / Right crop, right place
Where the timing comes from
Choose the region that actually covers your garden. These source references are not a nationwide planting calendar.
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.
02 / Know when the clock starts
How long until harvest?
These ranges start at different stages. Keep the method, region, and crop type attached to every number.
Central North Carolina
50–80days
From transplanting
Count from setting out transplants. The earlier nursery period is excluded.
Source crop: LeekRead source
Central North Carolina
120–150days
From direct sowing
Count from seed sown directly in the garden.
Source crop: LeekRead source
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.
03 / Before you plant
The details that matter
Amaryllidaceae
Plan for leeks
- Days from transplanting exclude the seedling nursery period; harden off plants before setting them out.
Maturity references vary with cultivar, harvest size, weather, and establishment method. Keep your seed packet or transplant label alongside the regional calendar.
Soil temperature
40°F
Published germination minimum · Colorado
A source germination minimum, not an optimum or a transplant threshold; do not treat the number as a guarantee.
Read soil-temperature sourceOpen evidence
Follow the sources.
Selected source facts reviewed . This is our review date, not the sources’ publication date.
How we use the data