Growing Welsh Onion in Zone 13a
Zone 13a has a year-round growing season. Welsh Onion can be planted almost any time with proper planning. Last frost: Jan 1. First frost: Dec 31.
Planting Calendar
Season: Jan 1 – Dec 31 (364 days)
When to Plant Welsh Onion in Zone 13a
Start Seeds Indoors: Oct 23
Start Welsh Onion seeds indoors around Oct 23 (10 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 7–14 days.
Transplant Outdoors: Dec 4
Transplant Welsh Onion seedlings outdoors after Dec 4. Wait until soil temperature reaches 45°F. Space plants at 6/sqft. Harden off plants for a week before moving outside.
Harvest: Feb 22
First harvest approximately Feb 22 (~80 days from transplant). Continue harvesting until first frost (Dec 31).
Welsh Onion 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 Welsh Onion in Zone 13a?
Start Welsh Onion seeds indoors around Oct 23. Transplant outdoors after Dec 4. Expect first harvest around Feb 22.
What is the last frost date for Zone 13a?
The average last spring frost date for Zone 13a is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.
Can I grow Welsh Onion in Zone 13a?
Yes. Welsh Onion needs 60 days to harvest. Zone 13a has a 364-day growing season, which is sufficient.
What is the best month to plant Welsh Onion in Zone 13a?
The best time to start Welsh Onion in Zone 13a is Oct. Begin seeds indoors around Oct 23, then transplant outdoors after the last frost date of Jan 1.
How long does Welsh Onion take to harvest?
Welsh Onion takes approximately 60 days from planting to harvest. In Zone 13a, expect your first harvest around Feb 22.
Plan Your Welsh Onion Garden
Track Welsh Onion from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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