cactus succulentN. America Native

Devil's Backbone

Euphorbia tithymaloides

The Story

Plant Bio

Euphorbia tithymaloides is an erect, succulent shrub native to the tropical and subtropical Americas, characterized by distinctive zigzag stems that abruptly change direction at each node. The fleshy, medium-green leaves are ovate and alternate, supporting terminal clusters of specialized red or pink bird-shaped cyathia during spring and summer.

The unique zigzag growth habit arises from alternating stem segments, creating a structural silhouette that functions well as an architectural accent. When damaged, the stems exude a thick, caustic white latex that deters herbivores but requires careful handling to avoid skin irritation.

Uses & Benefits:

Provides striking architectural form with its zigzag stems and colorful, bird-shaped cyathia.

Highly drought-tolerant once established, making it suitable for low-water landscapes and xeriscaping.

Flowers attract hummingbirds in North America, offering a nectar source during spring and summer.

Essentials

At a Glance

Plant Type

Cactus Succulent

Height

120"

Width

36"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

High

Lifespan

Perennial

Native To

Tropical and Subtropical Americas

Toxicity

Toxic to humans and pets; sap is a skin irritant

Bloom period

Spring – Summer

In flower about 6 months of the year

Planting

How to Grow

Select a planting site with sharply draining, gritty soil or a sandy succulent mix in full sun to bright indirect light.
Plant in a container or raised bed to ensure rapid drainage, keeping the crown level with the surrounding soil surface.
Water thoroughly at the base when the soil dries out completely, then allow the substrate to dry entirely before watering again.
Reduce watering frequency significantly during winter dormancy, keeping the soil almost dry to prevent root rot in cool temperatures.

Pro Tip

Prune stems only in spring to shape or remove cold damage, avoiding deep cuts into old, leafless wood which fails to regenerate new shoots.

Keep It Thriving

Care Guide

Do

Wear protective gloves and eye protection when pruning to avoid contact with the caustic, irritating milky sap.
Provide shelter or move containers indoors when temperatures threaten to drop below 32 degrees Fahrenheit.
Allow stem cuttings to dry and callous for several days before inserting them into a propagation medium.

Don't

Do not overwater during the winter months or allow the container to sit in standing water.
Do not prune heavily into old, woody, leafless stems as they rarely reshoot.
Do not plant in heavy, compacted clay soils that retain moisture around the root system.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Pest Check
Prune
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Architectural AccentRock GardensPatios and ContainersXeriscapingHedges in Frost-Free Zones

Companion Plants

Agave attenuata Sedum rubrotinctum Portulacaria afra

Multiply

Propagation Methods

Good to Know

Common Questions

Devil's Backbone questions

What zones can Devil's Backbone grow in?

Devil's Backbone is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Devil's Backbone deer resistant?

Yes — Devil's Backbone is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Devil's Backbone bloom?

Devil's Backbone typically blooms in spring through summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Devil's Backbone need full sun?

Devil's Backbone does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Devil's Backbone drought tolerant?

Yes — once established (usually after the first full season), Devil's Backbone handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.