Yarrow in Zone 7a & 7b
Achillea millefolium
Yes, yarrow grows in zones 7a and 7b. Start seeds indoors Feb 6–Feb 13 and plant out Apr 10–Apr 17.
When to plant yarrow 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 | Apr 10–Apr 17 |
| Estimated bloom | Jul 19–Jul 26 (~100 days after planting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Plant alongside it in zone 7b
These go outside within two weeks of yarrow in zone 7b, so one planting day can cover them.
- NasturtiumApr 17–Apr 24
- MarigoldApr 17–Apr 24
- African DaisyApr 10–Apr 17
- Amaranthus (Love-Lies-Bleeding)Apr 10–Apr 17
- Ammi (False Queen Anne's Lace)Apr 10–Apr 17
- Ammobium (Winged Everlasting)Apr 10–Apr 17
Yarrow is a hardy perennial known for its flat-topped flower clusters and its toughness once established. It tolerates poor soil, drought, and deer browsing better than most garden flowers.
How yarrow fits zone 7's season
Zone 7b's frost-free window runs about 198 days, from April 10 to October 25. Yarrow needs about 100 days from sowing to first bloom.
Yarrow 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 30–Jun 6 | Sep 7–Sep 14 |
| 4a & 4b | Mar 13–Mar 20 | May 15–May 22 | Aug 23–Aug 30 |
| 5a & 5b | Mar 8–Mar 15 | May 10–May 17 | Aug 18–Aug 25 |
| 6a & 6b | Feb 21–Feb 28 | Apr 25–May 2 | Aug 3–Aug 10 |
| 7a & 7b (your zone) | Feb 6–Feb 13 | Apr 10–Apr 17 | Jul 19–Jul 26 |
| 8a & 8b | Jan 21–Jan 28 | Mar 25–Apr 1 | Jul 3–Jul 10 |
| 9a & 9b | Dec 14–Dec 21 | Feb 15–Feb 22 | May 26–Jun 2 |
Bloom dates are about 100 days after the sow or plant-out date, not after starting seeds indoors.
Good companions
No well-established companions for yarrow.
Where to buy yarrow seeds
True Leaf Market · High Mowing Organic Seeds (each supplier's yarrow seeds)
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See it growing
Search YouTube for "growing yarrow" 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 Yarrow in USDA zone 7b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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