Growing Zinnia in Zone 2a
Zone 2a has harsh winters and a short growing season. Start Zinnia early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 15.
Planting Calendar
Season: May 15 – Sep 15 (123 days)
When to Plant Zinnia in Zone 2a
Start Seeds Indoors: Apr 17
Start Zinnia seeds indoors around Apr 17 (4 weeks before last frost). Optimal germination temperature: 75°F. Germinates in 5–10 days.
Transplant Outdoors: May 29
Transplant Zinnia seedlings outdoors after May 29. Wait until soil temperature reaches 60°F. Space plants at 8/sqft. Harden off plants for a week before moving outside.
Harvest: Jul 18
First harvest approximately Jul 18 (~50 days from transplant). Continue harvesting until first frost (Sep 15).
Zinnia 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 Zinnia in Zone 2a?
Start Zinnia seeds indoors around Apr 17. Transplant outdoors after May 29. Expect first harvest around Jul 18.
What is the last frost date for Zone 2a?
The average last spring frost date for Zone 2a is May 15. The first fall frost averages Sep 15, giving a 123-day growing season.
Can I grow Zinnia in Zone 2a?
Yes. Zinnia needs 60 days to harvest. Zone 2a has a 123-day growing season, which is sufficient.
What is the best month to plant Zinnia in Zone 2a?
The best time to start Zinnia in Zone 2a is Apr. Begin seeds indoors around Apr 17, then transplant outdoors after the last frost date of May 15.
How long does Zinnia take to harvest?
Zinnia takes approximately 60 days from planting to harvest. In Zone 2a, expect your first harvest around Jul 18.
Plan Your Zinnia Garden
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