Orach (Mountain Spinach) in Zone 11a & 11b
Atriplex hortensis
When to plant orach (mountain spinach) in zone 11b
Zones 11a and 11b 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 | Dec 18–Dec 25 |
| Estimated harvest | Feb 1 '27–Feb 8 '27 (~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 11's season
Zone 11b is frost-free in this dataset, so frost is not what limits the calendar here. What you can plant, and when, comes down to summer heat and daylength instead.
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 11b 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 11b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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