Goldenseal in Zone 8a & 8b
Hydrastis canadensis
Yes, goldenseal grows in zones 8a and 8b. Plant it outside Mar 25–Apr 1.
When to plant goldenseal in zone 8b
Zones 8a and 8b 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 | Mar 25–Apr 1 |
| Estimated harvest | About 3 years after planting |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1 ft.
Plant alongside it in zone 8b
These go outside within two weeks of goldenseal in zone 8b, so one planting day can cover them.
- BasilApr 8–Apr 15
- BorageMar 25–Apr 1
- DillMar 18–Mar 25
- RosemaryApr 8–Apr 15
- American GinsengMar 25–Apr 1
- AniseMar 25–Apr 1
Goldenseal is a shade-dependent Native American medicinal root, propagated from root divisions rather than seed, since any piece with a bud and a few fibrous roots will grow into a new plant.
How goldenseal fits zone 8's season
Zone 8b's frost-free window runs about 230 days, from March 25 to November 10. Goldenseal takes about 3 years from planting to first harvest, so it spans more than one growing season.
Goldenseal planting windows in every zone
Zone 8b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 5a & 5b | Not usually | May 10–May 17 | About 3 years after planting |
| 6a & 6b | 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 (your zone) | Not usually | Mar 25–Apr 1 | About 3 years after planting |
Good companions
No well-established companions for goldenseal.
Where to buy goldenseal seeds
None of the seed suppliers we list carries goldenseal 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 goldenseal" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 8b calendar · Plan your beds in the Garden Designer →
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Growing Goldenseal in USDA zone 8b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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