Growing Black-Eyed Susan in Zone 3b
Zone 3b has harsh winters and a short growing season. Start Black-Eyed Susan early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 22.
Planting Calendar
Season: May 15 – Sep 22 (130 days)
When to Plant Black-Eyed Susan in Zone 3b
Start Seeds Indoors: Mar 20
Start Black-Eyed Susan seeds indoors around Mar 20 (8 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 10–21 days.
Transplant Outdoors: May 15
Transplant Black-Eyed Susan seedlings outdoors after May 15. Wait until soil temperature reaches 55°F. Space plants at 12/sqft. Harden off plants for a week before moving outside.
Harvest: Aug 13
First harvest approximately Aug 13 (~90 days from transplant). Continue harvesting until first frost (Sep 22). Black-Eyed Susan can overwinter in mild climates for continued harvest.
Black-Eyed Susan 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 Black-Eyed Susan in Zone 3b?
Start Black-Eyed Susan seeds indoors around Mar 20. Transplant outdoors after May 15. Expect first harvest around Aug 13.
What is the last frost date for Zone 3b?
The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.
Can I grow Black-Eyed Susan in Zone 3b?
Yes. Black-Eyed Susan needs 75 days to harvest. Zone 3b has a 130-day growing season, which is sufficient.
What is the best month to plant Black-Eyed Susan in Zone 3b?
The best time to start Black-Eyed Susan in Zone 3b is Mar. Begin seeds indoors around Mar 20, then transplant outdoors after the last frost date of May 15.
How long does Black-Eyed Susan take to harvest?
Black-Eyed Susan takes approximately 75 days from planting to harvest. In Zone 3b, expect your first harvest around Aug 13.
Plan Your Black-Eyed Susan Garden
Track Black-Eyed Susan from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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