Vegetable Amaranth in Zone 10a & 10b
Amaranthus tricolor
When to plant vegetable amaranth in zone 10b
Zones 10a and 10b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Vegetable Amaranth doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | Feb 13–Feb 20 |
| Estimated harvest | Mar 25–Apr 1 (~40 days after direct-sowing) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1-2 ft.
Vegetable amaranth is a warm-season leafy green grown for its tender leaves, sometimes streaked in red, pink, or yellow depending on the strain, harvested young rather than left to reach the height of the ornamental amaranths.
How vegetable amaranth fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Vegetable Amaranth needs about 40 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Vegetable Amaranth.
Where to buy vegetable amaranth seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing vegetable amaranth" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 10b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Vegetable Amaranth in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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