American Ginseng in Zone 6a & 6b
Panax quinquefolius
Yes, American ginseng grows in zones 6a and 6b. Plant it outside Apr 25–May 2.
When to plant American ginseng in zone 6b
Zones 6a and 6b share the same average frost dates, so this page covers both.
Method: Direct sow: Direct-sow outside. It doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | Apr 25–May 2 |
| Estimated harvest | About 3 years after planting |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 0.5-1.5 ft.
Plant alongside it in zone 6b
These go outside within two weeks of American ginseng in zone 6b, so one planting day can cover them.
- BasilMay 9–May 16
- BorageApr 25–May 2
- DillApr 18–Apr 25
- RosemaryMay 9–May 16
- AniseApr 25–May 2
- Anise HyssopApr 25–May 2
American ginseng is a slow woodland perennial, taking 180-plus days just to germinate and several years more before the root is worth digging.
How American ginseng fits zone 6's season
Zone 6b's frost-free window runs about 173 days, from April 25 to October 15. American ginseng takes about 3 years from planting to first harvest, so it spans more than one growing season.
American Ginseng planting windows in every zone
Zone 6b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 4a & 4b | Not usually | May 15–May 22 | About 3 years after planting |
| 5a & 5b | Not usually | May 10–May 17 | About 3 years after planting |
| 6a & 6b (your zone) | Not usually | Apr 25–May 2 | About 3 years after planting |
| 7a & 7b | Not usually | Apr 10–Apr 17 | About 3 years after planting |
| 8a & 8b | Not usually | Mar 25–Apr 1 | About 3 years after planting |
Good companions
No well-established companions for American ginseng.
Where to buy American ginseng seeds
None of the seed suppliers we list carries American ginseng seeds right now. A local garden center or a specialty seed house is the place to look.
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing American ginseng" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 6b calendar · Plan your beds in the Garden Designer →
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Growing American Ginseng in USDA zone 6b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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