Blue Euphorbia
Euphorbia rigida
A blue-gray Mediterranean succulent that lights up winter gardens with bright chartreuse flower clusters.
Cold hardy to about 10-15°F, USDA 9-11; a Mediterranean succulent that takes low-desert winters but appreciates afternoon shade in peak heat.
AMWUA Notes
Sap is a skin irritant.
Care Guide
Water monthly in the warm season and keep dry in winter; excellent drainage is essential.
Cut spent flower stems to the base after bloom, wearing gloves against the irritating white sap; this keeps the mound tidy.
Not necessary in lean soil.
Trouble-free; the sap deters most pests.
Cold hardy to around 10-15°F but can scorch in extreme summer heat—light afternoon shade helps inland; bright chartreuse blooms light up midwinter.
Soil, Feeding & Propagation
Sharp-draining gritty or gravelly soil; lean, low organic matter
Needs sharp, fast-draining soil.
None — thrives in lean desert soil without fertilizer.
Seed or cuttings (let the sap callus first)
3 ft
Shallow, non-invasive roots; keep the irritating sap off skin
Placement Tips
- •Use in borders and rock gardens for winter color.
- •Keep the sap off skin.
- •Plant in sharp-draining soil.
- •Give it 3 ft of spread and a little afternoon shade in the hottest spots.
Features
Best Uses
Companion Plants
Quick Stats
Design Styles
Include in Your Project
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Use this care guide to maintain your Blue Euphorbia. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.