🧅 When to Plant Leeks in Zone 10

Short answer: transplant Dec 28 – Jan 11. Here's the full schedule, built from zone 10's typical frost dates.

TaskWindow
Start seeds indoors
10–8 weeks before last frost
Nov 16 – Nov 30
Transplant outdoorsDec 28 – Jan 11
Zone 10 frost window
Jan 25 → Dec 20
~329 frost-free days
Spacing
6″ / 12″
plants / rows
Maturity
100–120 days
from transplant

Growing leeks in zone 10

Drop pencil-thick transplants into 6-inch holes and let rain fill them in — the buried stem blanches white. Leeks hold in the garden deep into winter; harvest as needed rather than all at once.

Zone 10 covers south Florida, coastal Southern California, low desert — frost is rare — the calendar flips, with the main garden running fall through spring. Zone dates are medians: frost timing varies within a zone with elevation and terrain, so treat these windows as a solid default and refine them with your own city’s dates below.

Make it local

These windows use zone 10's typical frost dates (last frost ~Jan 25, first frost ~Dec 20). For windows computed from your frost dates, run the ZIP code frost lookup and open the planting calendar — it remembers your city. The seed starting scheduler turns the whole seed rack into one printable, date-sorted list.

Frequently asked questions

When do I plant leeks in zone 10?

Transplant Dec 28 – Jan 11, counted from zone 10's typical last frost around Jan 25. As a hardy crop it tolerates the light frosts on either side of that window.

When should I start seeds indoors for leeks in zone 10?

Sow indoors Nov 16 – Nov 30 — that's 10 to 8 weeks before the typical Jan 25 last frost, giving sturdy transplants exactly when the garden is ready for them.

Can I direct sow leeks in zone 10?

Not usefully in zone 10 — leeks needs more growing time than direct sowing allows, which is why it's raised from transplants started indoors Nov 16 – Nov 30.