🧅 When to Plant Leeks in Zone 12

Zone 12 is frost-free (Hawaiʻi lowlands, Puerto Rico) — plant leeks through the coolest months, typically October to March.

No frost windows apply in zone 12. Grow leeks through the coolest months (typically October–March); it bolts or fades once real heat arrives.
Zone 12 frost window
Frost-free
Hawaiʻi lowlands, Puerto Rico
Spacing
6″ / 12″
plants / rows
Maturity
100–120 days
from transplant

Growing leeks in zone 12

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 12 covers hawaiʻi lowlands, Puerto Rico — tropical — timing follows wet and dry seasons rather than frost.

Make it local

These windows use zone 12's typical frost dates. 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 should I plant leeks in zone 12?

Zone 12 is frost-free, so timing flips from frost-avoidance to heat management: plant leeks through the coolest months, typically October to March. Summer heat, not winter cold, is what ends this crop here.

Does leeks grow well in zone 12?

Yes, in the right months. Leeks is a cool-season crop, so grow it through zone 12's mildest stretch and expect it to bolt or fade as serious heat builds.