Orach (Mountain Spinach) in Zone 3a & 3b
Atriplex hortensis
When to plant orach (mountain spinach) in zone 3b
Zones 3a and 3b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Orach (Mountain Spinach) doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | May 16–May 23 |
| Estimated harvest | Jun 30–Jul 7 (~45 days after direct-sowing) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 3-5 ft.
Orach, also called mountain spinach, is a heat-tolerant spinach substitute that keeps producing through summer weather that would send true spinach straight into bolting.
How orach (mountain spinach) fits zone 3's season
Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. Orach (Mountain Spinach) needs about 45 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Orach (Mountain Spinach).
Where to buy orach seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing orach (mountain spinach)" 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 Orach (Mountain Spinach) in USDA zone 3b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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