Growing Korean Zucchini in Zone 12b

Zone 12b has a year-round growing season. Korean Zucchini can be planted almost any time with proper planning. Last frost: Jan 1. First frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 4Dec 31

Season: Jan 1 – Dec 31 (364 days) · Succession: plant every 3 weeks (up to 14x)

Zone12b

Last FrostJan 1

First FrostDec 31

Season Length364 days

Days to Harvest55

SunFull Sun

Frost ToleranceNone

Spacing1/sqft (12" apart)

When to Plant Korean Zucchini in Zone 12b

Start Seeds Indoors: Dec 4

Start Korean Zucchini seeds indoors around Dec 4 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–10 days.

Transplant Outdoors: Jan 1

Transplant Korean Zucchini seedlings outdoors after Jan 1. Wait until soil temperature reaches 65°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Feb 5

First harvest approximately Feb 5 (~35 days from transplant). Continue harvesting until first frost (Dec 31).

Companion Planting

✅ Corn✅ Bean✅ Nasturtium ✅ Marigold

❌ Potato

Korean Zucchini in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Frequently Asked Questions

When should I plant Korean Zucchini in Zone 12b?

Start Korean Zucchini seeds indoors around Dec 4. Transplant outdoors after Jan 1. Expect first harvest around Feb 5.

What is the last frost date for Zone 12b?

The average last spring frost date for Zone 12b is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.

Can I grow Korean Zucchini in Zone 12b?

Yes. Korean Zucchini needs 55 days to harvest. Zone 12b has a 364-day growing season, which is sufficient. You can plant up to 14 successions.

What is the best month to plant Korean Zucchini in Zone 12b?

The best time to start Korean Zucchini in Zone 12b is Dec. Begin seeds indoors around Dec 4, then transplant outdoors after the last frost date of Jan 1.

What companion plants grow well with Korean Zucchini?

Good companion plants for Korean Zucchini include Corn, Bean, Nasturtium, Marigold. Avoid planting Korean Zucchini near Potato.

How long does Korean Zucchini take to harvest?

Korean Zucchini takes approximately 55 days from planting to harvest. In Zone 12b, expect your first harvest around Feb 5.

Plan Your Korean Zucchini Garden

Track Korean Zucchini from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Korean Zucchini Growing Guide