Saltwort in Zone 4a & 4b
Salsola komarovii
When to plant saltwort in zone 4b
Zones 4a and 4b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Saltwort doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | May 15–May 22 |
| Estimated harvest | Jun 29–Jul 6 (~45 days after direct-sowing) |
Spacing: 9 per square foot (square-foot-gardening spacing). Mature height: 0.5-1.5 ft.
Saltwort is a Japanese salt-marsh green with a crisp, briny bite similar to samphire, adapted to salty soil but perfectly happy growing in ordinary garden dirt too.
How saltwort fits zone 4's season
Zone 4b's frost-free window runs about 128 days, from May 15 to September 20. Saltwort needs about 45 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Saltwort.
Where to buy saltwort seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing saltwort" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 4b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Saltwort in USDA zone 4b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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