Mottled Spurge

Euphorbia lactea

Easy · Beginner friendly

About Mottled Spurge

Mottled Spurge or Coral Cactus is a striking succulent euphorbia from India and Sri Lanka, forming branched candelabra-like upright stems with prominent ridges and short spines. Reaching 5-15 feet, the cristate (crested) form is widely sold in the United States as 'Coral Cactus', often grafted onto Euphorbia neriifolia rootstock. Its sculptural angular form makes it a defining plant of modern desert and minimalist garden design.

Drought-tolerant
Container-friendly
Architectural
Evergreen

WATER

Regular

Top inch dry

LIGHT

Full sun

6+ hrs direct

HARDY

Hardy to 30°F (-1°C)

USDA hardiness zones 10–12

How to care for Mottled Spurge

Watering

Springevery 14 days
Summerevery 21 days
Fallevery 30 days
Winterevery 45 days

Soil · Fast-draining

Main mixSand + pumice + soil 1:1:150%
DrainagePumice / gravel50%

Keep grit at half the mix or more — this soil is meant to dry out fast.

FERTILIZER

Springevery 60 days
Summerevery 60 days

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At a Glance

NativeSouth Asia
Height3–6 ft (0.9–1.8 m)
Spread2–3 ft (0.6–0.9 m)
Flower colorGreen
Foliage colorGreen, Variegated
SoilSandy, Well-drained
LocationsYard · Balcony · Indoor

Bloom time

BLOOM CYCLE

Peak bloom

Jun–Aug

Inconspicuous small yellow-green cyathia

Toxicity

Humans Toxic · Pets Toxic

diterpene esters and phorbol esters

HumansDogsCats

Toxic

Sap
Stem
Contact
Ingestion

EXPOSURE Touching sap and stems. Eating sap and stems.

EFFECT Severe skin/eye irritation, burning, blistering, and temporary blindness.

NOTE Documented concern for humans: Severe skin/eye irritation, burning, blistering, and temporary blindness.

Toxic

Sap
Stem
Contact
Ingestion

EXPOSURE Touching sap and stems. Eating sap and stems.

EFFECT Oral irritation, vomiting, diarrhea, and eye damage.

NOTE ASPCA lists Euphorbia as toxic. Latex extremely irritating—wear gloves and eye protection when handling.

Toxic

Sap
Stem
Contact
Ingestion

EXPOSURE Touching sap and stems. Eating sap and stems.

EFFECT Oral irritation, vomiting, diarrhea, and eye damage.

NOTE ASPCA lists Euphorbia as toxic. Latex extremely irritating—wear gloves and eye protection when handling.

Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.

DISTRIBUTION

Native
Introduced

South Asia

History

Illustrated historical scene for Mottled Spurge

Euphorbia lactea, commonly called mottled spurge, dragon bones, or milk-striped euphorbia, is a succulent shrub-tree in the spurge family (Euphorbiaceae) native to tropical India and Sri Lanka, though it has been cultivated so widely across the tropics for centuries that its exact natural range is now obscured. British botanist Adrian Hardy Haworth described the species in 1812 in Synopsis Plantarum Succulentarum. The epithet lactea refers to the copious white milky latex characteristic of the genus.

Plants develop into 3-5 meter (rarely to 9 meter) candelabriform succulent trees with three or four-angled green stems bearing distinctive pale green, white, or creamy mottling along the central axis and short paired spines along the ribs. True leaves are small and ephemeral. Insignificant small green flowers (cyathia).

The crested 'Cristata' form (dragon bones or crested elkhorn), often grafted atop Euphorbia neriifolia rootstock, and the white-variegated 'White Ghost' are highly prized collector succulents. The milky sap is severely irritating to skin and eyes. Native to South Asia where it has long been used as living fence rows in tropical India. Despite its cactus-like appearance, it is a true Euphorbia, not a cactus. Reached Western horticulture in the 18th century. cristata) is a spontaneous fasciation mutation in which abnormal cell proliferation at the growing tip causes the stem to fan out into a dramatic wave-like crest.

Symbolism & meaning

What It Symbolizes

Mottled Spurge is survival with armor. Ridged stems, mottled surfaces, and sharp spines make the plant look engineered for dry, difficult places. Its symbolism is guarded endurance: not inviting, not soft, but perfectly honest about the cost of living where water and mercy are scarce.

Resilience — thrives in harsh conditions across continents
Defense — spines and toxic sap deter herbivores

Where the Name Comes From

'Euphorbia' honors Greek physician Euphorbus; 'lactea' refers to the milky sap.

Uses & Fun Facts

Crested coral cactus form sold widely as houseplant
Candelabra succulent as architectural desert garden focus
Ridged ghostly stems add sculptural form indoors

Related plants

More Euphorbia plants

Plants with similar care

Frequently asked questions

How often should I water Mottled Spurge?

In summer, water about every 21 days; in winter, about every 45 days. Adjust for heat, pot size and drainage.

How much light does Mottled Spurge need?

Full sun: 6+ hrs direct. Watch the leaves — scorching or stretching means the light needs adjusting.

Is Mottled Spurge toxic to cats or dogs?

Pets Toxic (Dogs Toxic · Cats Toxic) Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.

Is Mottled Spurge easy to grow?

Yes — it is considered an easy, beginner-friendly plant.

Can Mottled Spurge be grown indoors?

Yes, it adapts well to indoor growing given the right light.

When does Mottled Spurge bloom?

It typically blooms Jun–Aug in the Northern Hemisphere.

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