Growing Korean Zucchini in Zone 1a
Zone 1a has harsh winters and a short growing season. Start Korean Zucchini early indoors to maximize your harvest window. Last frost: May 25. First frost: Aug 28.
Planting Calendar
Season: May 25 – Aug 28 (95 days) · Succession: plant every 3 weeks (up to 1x)
When to Plant Korean Zucchini in Zone 1a
Start Seeds Indoors: Apr 27
Start Korean Zucchini seeds indoors around Apr 27 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–10 days.
Transplant Outdoors: May 25
Transplant Korean Zucchini seedlings outdoors after May 25. Wait until soil temperature reaches 65°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.
Harvest: Jun 29
First harvest approximately Jun 29 (~35 days from transplant). Continue harvesting until first frost (Aug 28).
Companion Planting
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 13bFrequently Asked Questions
When should I plant Korean Zucchini in Zone 1a?
Start Korean Zucchini seeds indoors around Apr 27. Transplant outdoors after May 25. Expect first harvest around Jun 29.
What is the last frost date for Zone 1a?
The average last spring frost date for Zone 1a is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.
Can I grow Korean Zucchini in Zone 1a?
Yes. Korean Zucchini needs 55 days to harvest. Zone 1a has a 95-day growing season, which is sufficient. You can plant up to 1 successions.
What is the best month to plant Korean Zucchini in Zone 1a?
The best time to start Korean Zucchini in Zone 1a is Apr. Begin seeds indoors around Apr 27, then transplant outdoors after the last frost date of May 25.
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 1a, expect your first harvest around Jun 29.
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