Euphorbia (Snow-on-the-Mountain) in Zone 3a & 3b

Euphorbia marginata

When to plant euphorbia (snow-on-the-mountain) in zone 3b

Zones 3a and 3b 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.

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 3's season

Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. Euphorbia (Snow-on-the-Mountain) needs about 80 days from sowing to first harvest.

Good companions

No standout companions recorded yet for Euphorbia (Snow-on-the-Mountain).

Where to buy euphorbia seeds

• Botanical Interests
• True Leaf Market
• Burpee
• High Mowing Organic 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 3b 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 3b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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