Euphorbia (Snow-on-the-Mountain) in Zone 11a & 11b
Euphorbia marginata
When to plant euphorbia (snow-on-the-mountain) in zone 11b
Zones 11a and 11b share the same average frost dates in our data, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Euphorbia (Snow-on-the-Mountain) tolerates either.
| Start indoors | Nov 27–Dec 4 |
|---|---|
| Direct sow / transplant outside | Jan 1–Jan 8 |
| Estimated bloom | Mar 22–Mar 29 (~80 days after planting) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.

Euphorbia, commonly called snow-on-the-mountain, is grown for its white-margined bracts that look frosted even in the height of summer heat, an unusual filler for a bouquet or used as annual hedging along a border.
How euphorbia (snow-on-the-mountain) 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 Euphorbia (Snow-on-the-Mountain).
Where to buy euphorbia seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing euphorbia (snow-on-the-mountain)" 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 Euphorbia (Snow-on-the-Mountain) in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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