Purple Coneflower in Zone 7a & 7b
Echinacea purpurea
Yes, purple coneflower grows in zones 7a and 7b. Start seeds indoors Feb 6–Feb 13 and plant out Mar 20–Mar 27.
When to plant purple coneflower in zone 7b
Zones 7a and 7b share the same average frost dates, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Either works.
| Start indoors | Feb 6–Feb 13 |
|---|---|
| Direct sow / transplant outside | Mar 20–Mar 27 |
| Estimated bloom | About a year after planting |
Spacing: about 4 square feet per plant (square-foot-gardening spacing). Mature height: 2-3 ft.
Plant alongside it in zone 7b
These go outside within two weeks of purple coneflower in zone 7b, so one planting day can cover them.
- Black-Eyed SusanMar 20–Mar 27
- Clarkia (Farewell-to-Spring)Mar 20–Mar 27
- Cynoglossum (Chinese Forget-Me-Not)Mar 20–Mar 27
- Phacelia (Lacy Phacelia)Mar 20–Mar 27
- Saponaria (Soapwort)Mar 20–Mar 27
- Shasta DaisyMar 20–Mar 27
Coneflower is a genuine perennial, not a flower you plant once and rely on for a bloom that same season. It's here for the long-term structure it gives the garden and the pollinators it pulls in year after year, once it's established: 2- to 4-foot stems topped with pink or purple petals drooping away from a raised, spiky orange-brown cone.
How purple coneflower fits zone 7's season
Zone 7b's frost-free window runs about 198 days, from April 10 to October 25. Purple coneflower takes about a year from planting to first bloom, so it spans more than one growing season.
Purple Coneflower planting windows in every zone
Zone 7b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Bloom |
|---|---|---|---|
| 3a & 3b | Mar 28–Apr 4 | May 9–May 16 | About a year after planting |
| 4a & 4b | Mar 13–Mar 20 | Apr 24–May 1 | About a year after planting |
| 5a & 5b | Mar 8–Mar 15 | Apr 19–Apr 26 | About a year after planting |
| 6a & 6b | Feb 21–Feb 28 | Apr 4–Apr 11 | About a year after planting |
| 7a & 7b (your zone) | Feb 6–Feb 13 | Mar 20–Mar 27 | About a year after planting |
| 8a & 8b | Jan 21–Jan 28 | Mar 4–Mar 11 | About a year after planting |
Good companions
No well-established companions for purple coneflower.
Where to buy purple coneflower seeds
True Leaf Market (purple coneflower seeds)
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See it growing
Search YouTube for "growing purple coneflower" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 7b calendar · Plan your beds in the Garden Designer →
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Growing Purple Coneflower in USDA zone 7b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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