Ammobium (Winged Everlasting) in Zone 3a & 3b
Ammobium alatum
When to plant ammobium (winged everlasting) in zone 3b
Zones 3a and 3b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. Ammobium (Winged Everlasting) needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Apr 18–Apr 25 |
|---|---|
| Direct sow / transplant outside | May 30–Jun 6 |
| Estimated bloom | Aug 18–Aug 25 (~80 days after transplanting) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1.5-2 ft.

Ammobium, commonly called winged everlasting for the papery white bracts and the winged ridges running down its stems, is an uncommon but easy dried-flower crop worth trying if the more familiar strawflower feels overdone.
How ammobium (winged everlasting) fits zone 3's season
Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. Ammobium (Winged Everlasting) needs about 80 days from transplant to first harvest.
Good companions
No standout companions recorded yet for Ammobium (Winged Everlasting).
Where to buy ammobium seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing ammobium (winged everlasting)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 3b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

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Growing Ammobium (Winged Everlasting) in USDA zone 3b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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