Growing Korean Zucchini in Zone 10b

Zone 10b has a year-round growing season. Korean Zucchini can be planted almost any time with proper planning. Last frost: Jan 28. First frost: Dec 22.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 31Dec 22

Season: Jan 28 – Dec 22 (328 days) · Succession: plant every 3 weeks (up to 13x)

Zone10b

Last FrostJan 28

First FrostDec 22

Season Length328 days

Days to Harvest55

SunFull Sun

Frost ToleranceNone

Spacing1/sqft (12" apart)

When to Plant Korean Zucchini in Zone 10b

Start Seeds Indoors: Dec 31

Start Korean Zucchini seeds indoors around Dec 31 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–10 days.

Transplant Outdoors: Jan 28

Transplant Korean Zucchini seedlings outdoors after Jan 28. Wait until soil temperature reaches 65°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Mar 4

First harvest approximately Mar 4 (~35 days from transplant). Continue harvesting until first frost (Dec 22).

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 10b?

Start Korean Zucchini seeds indoors around Dec 31. Transplant outdoors after Jan 28. Expect first harvest around Mar 4.

What is the last frost date for Zone 10b?

The average last spring frost date for Zone 10b is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.

Can I grow Korean Zucchini in Zone 10b?

Yes. Korean Zucchini needs 55 days to harvest. Zone 10b has a 328-day growing season, which is sufficient. You can plant up to 13 successions.

What is the best month to plant Korean Zucchini in Zone 10b?

The best time to start Korean Zucchini in Zone 10b is Dec. Begin seeds indoors around Dec 31, then transplant outdoors after the last frost date of Jan 28.

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 10b, expect your first harvest around Mar 4.

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