Martin's Spurge

Euphorbia × martini

Hard · Experienced growers

About Martin's Spurge

Martin's Spurge is a compact, sub-shrubby evergreen perennial forming tidy mounds of narrow, grey-green leaves that often flush burgundy or purple along the stems, especially in cool weather. In spring, rounded clusters of chartreuse flower heads open above the foliage, each one centered with a small dark red-purple eye where the true flowers meet at the nectar glands. A naturally occurring hybrid between two Mediterranean spurges, it thrives in poor, well-drained, alkaline soil and full sun, tolerating drought, salt, and neglect once established. Like other spurges, its stems ooze a milky, irritant sap when cut, so it is best handled with gloves; in the garden it suits gravel beds, dry borders, and Mediterranean-style plantings.

Drought-tolerant
Evergreen
Showy-fruit
Compact

WATER

Soak & dry

Deep, infrequent

LIGHT

Full sun

6+ hrs direct

HARDY

Hardy to -10°F (-23°C)

USDA hardiness zones 6–8

How to care for Martin's Spurge

Watering

Springevery 10 days
Summerevery 5 days
Fallevery 20 days
Winterevery 30 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 30 days
Summerevery 60 days

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At a Glance

NativeMediterranean
Height1–2 ft (0.3–0.6 m)
Spread2–3 ft (0.6–0.9 m)
Flower colorYellow
Foliage colorGreen
Fruit colorRed
SoilWell-drained, Alkaline
LocationsYard · Patio

Bloom time

BLOOM CYCLE

Peak bloom

May–Jun

This plant flowers in May and June, with abundant and beautiful blossoms.

Toxicity

Humans Moderate · Pets Moderate

diterpene esters

HumansDogsCats

Moderate

All
Stem
Leaf
Sap
Contact
Ingestion

EXPOSURE Contact with any part of the plant, stems, and leaves. Touching any part of the plant, stems, and leaves. Eating any part of the plant, stems, and leaves.

EFFECT Skin irritation, eye irritation, nausea and vomiting if ingested, and mouth and throat irritation.

NOTE Milky latex sap is irritant to skin, eyes, and mucous membranes; can cause vomiting and mouth irritation if ingested by people or pets.

Moderate

All
Stem
Leaf
Sap
Contact
Ingestion

EXPOSURE Contact with any part of the plant, stems, and leaves. Touching any part of the plant, stems, and leaves. Eating any part of the plant, stems, and leaves.

EFFECT Oral and skin irritation, vomiting, and drooling.

NOTE Milky latex sap is irritant to skin, eyes, and mucous membranes; can cause vomiting and mouth irritation if ingested by people or pets.

Moderate

All
Stem
Leaf
Sap
Contact
Ingestion

EXPOSURE Contact with any part of the plant, stems, and leaves. Touching any part of the plant, stems, and leaves. Eating any part of the plant, stems, and leaves.

EFFECT Oral and skin irritation, vomiting, and drooling.

NOTE Milky latex sap is irritant to skin, eyes, and mucous membranes; can cause vomiting and mouth irritation if ingested by people or pets.

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

DISTRIBUTION

Native

Mediterranean

History

Illustrated historical scene for Martin's Spurge

The genus this plant belongs to carries an old and slightly dramatic history. Euphorbia is named for Euphorbus, physician to King Juba II of Numidia in North Africa around the turn of the first century CE, who reportedly used the milky sap of a towering desert spurge as a purgative medicine. That sap, rich in irritant compounds, has a long dual reputation across the genus: medicinal in careful hands, and elsewhere used as a fish poison or arrow poison by peoples in Africa and beyond. This particular plant is a much gentler product of that same lineage. It arose as a natural hybrid where the ranges of two Mediterranean spurges, Euphorbia amygdaloides and Euphorbia characias, overlap in the wild, in dry, rocky ground in southern Europe where both parent species already share a family resemblance: narrow grey-green leaves and domed clusters of small flowers surrounded by colorful bracts. The hybrid was later named for the plantsman credited with recognizing it as something distinct worth propagating. Compared to its parents, it stays smaller and neater, forming tidy mounds rather than tall, leggy stands, while keeping the same chartreuse flower heads marked with a dark red eye that opens each spring. As dry, low-water gardening gained popularity through the twentieth century, this hybrid moved from a chance wildflower find into nurseries and gravel gardens around the world, prized for combining architectural form with color that needs no summer irrigation to keep going.

Symbolism & meaning

What It Symbolizes

Spurges like this one defend themselves with a milky latex that deters browsing animals and insects, a trait that has long linked the genus to ideas of protection and resilience. Thriving in thin, dry, sun-baked soil where gentler plants falter, Martin's Spurge carries that same quiet toughness, holding its neat mounded shape and chartreuse flowers through drought and neglect that would defeat softer garden perennials.

Resilience — Its milky, irritant sap and drought-hardy nature have long made spurges a symbol of quiet self-protection and resilience in harsh, dry ground.

Where the Name Comes From

The genus name Euphorbia honors Euphorbus, physician to King Juba II of Numidia in the first century BCE, who is said to have used the milky sap of a North African spurge as a purgative. The species name martini commemorates the plantsman credited with first recognizing this naturally occurring hybrid between Euphorbia amygdaloides and Euphorbia characias, found growing where its two parent species overlap in the wild.

Uses & Fun Facts

Grown for its neat mounding form and chartreuse, red-eyed spring flower clusters in dry gardens.
Its spring flower clusters attract bees and other early-season pollinators.

Related plants

More Euphorbia plants

Plants with similar care

Frequently asked questions

How often should I water Martin's Spurge?

In summer, water about every 5 days; in winter, about every 30 days. Adjust for heat, pot size and drainage.

How much light does Martin's Spurge need?

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

Is Martin's Spurge toxic to cats or dogs?

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

Is Martin's Spurge easy to grow?

It is considered challenging and rewards experienced growers.

When does Martin's Spurge bloom?

It typically blooms May–Jun in the Northern Hemisphere.

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