Euphorbia maculata

Spotted Spurge Identification & Control

Spotted Spurge, also known as Milkspurt or Spotted Sand-mat, is an exceptionally aggressive, highly toxic annual broadleaf weed in the Euphorbiaceae family. Native to North America but globally naturalized, it is a severe nuisance in home gardens, sidewalk cracks, and dry lawns. It forms dense, circular, flat mats radiating from a single central taproot. The small green leaves feature a highly unique, dark-red spot along the midvein, and the entire plant bleeds a highly toxic, sticky milky sap when broken, causing skin blisters and pet poisoning.

Sunlight Full Sun

Watering Tolerance Low

Soil Adaptability Sandy / Poor Soil / Crack Seams

Growth Temp 12°C - 42°C

Danger / Toxicity Toxic Milky Sap / Skin Irritant

Botanical macro photography of Spotted Spurge (Euphorbia maculata) - Plant AI care and control database

How to Identify Spotted Spurge

A prostrate annual forming flat, circular green-red mats, with small opposite leaves showing a dark-red center spot, and sticky milky sap.

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Toxic Milky Latex Sap: Broken stems immediately bleed a thick, sticky, milky-white sap that is highly corrosive and irritating to skin.
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Red-Spotted Oval Leaves: Small, opposite green leaves (5 to 12 mm long) feature a highly distinct, dark reddish-purple spot along the central midvein.
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Central Taproot Rosette: Stems radiate flat from a single, thin central taproot, forming a circular mat up to 2 feet wide.

💡 Skin Warning: The milky sap of Spotted Spurge contains toxic esters! If it touches bare skin, it can cause severe contact dermatitis, redness, and blisters. Always wear protective gloves when weeding.

Complete Care & Management Guide

Access highly technical, scientific management directives to control or cultivate Spotted Spurge effectively.

Extremely drought-tolerant. It thrives in bone-dry gravel driveways, desert lawns, and pavement cracks where other plants wither from lack of moisture.

Resistant to mowing. Because the circular mats grow completely flat against the soil or pavement, lawn mowers pass over them without clipping the stems or seeds.

Thrives in nutrient-poor and sterile sandy soils. Regular lawn fertilization helps turf grass grow densely, shading out emerging spurge seedlings in spring.

Requires Full Sun. It cannot tolerate shade and will fail to grow under trees, beneath thick garden shrubs, or in dense, healthy lawns.

Highly adapted to dry sandy soil, sterile gravel driveways, sidewalk cracks, and compacted dirt yards. It struggles in saturated wet soil.

Spreads aggressively strictly by seeds. A single plant can produce up to 20,000 seeds. The seeds develop a sticky coating when wet, adhering to shoes and tires.

A summer annual. Seeds germinate rapidly in late spring when soil temperatures reach 75°F (24°C). The entire plant dies with the first winter frost.

Features a shallow, thin central taproot. Because the entire circular mat connects to a single taproot, it is exceptionally easy to hand-pull if you grab the center.

Virtually immune to pests due to its highly toxic, sticky milky sap, which acts as a powerful natural insect deterrent.

Rarely suffers from diseases, though damp autumns can bring mild leaf spot spots that fail to kill the plant before it drops seeds.

To control Spotted Spurge organically, wear gloves, grab the central crown of the circular mat, pull the single taproot out, and apply thick mulch to block seeds.

Common Diseases & Treatment

Milky Sap Dermatitis

Symptoms: Symptoms: Severe skin itching, redness, and small watery blisters appearing after handling broken spurge stems.

Action: Action: Wash the skin immediately with plenty of soap and warm water to remove the sticky latex. Apply hydrocortisone cream.

Sidewalk Seam Invasion

Symptoms: Symptoms: Pavement and driveway joints are completely choked by flat, circular green-red mats of spurge.

Action: Action: Pour boiling water or spray 20% horticultural vinegar directly onto the crack seams to kill the roots and sterilize the seeds.

Frequently Asked Questions

Why does Spotted Spurge bleed white sap?

The white sap is a toxic latex composed of complex organic compounds (diterpene esters). It acts as a powerful chemical defense mechanism that deters insects and grazing animals, while sealing wounds to prevent moisture loss.

Is Spotted Spurge toxic to dogs and cats?

Yes. If consumed by pets, the milky sap causes severe irritation and blistering of the mouth, tongue, and digestive tract, leading to drooling, vomiting, and diarrhea. Keep pets away from heavily infested yards.

How can I identify Spotted Spurge from other weeds?

Look for three key features: 1. It grows in a flat, circular mat radiating from a single point; 2. The tiny leaves have a distinct dark-red smudge in the center; 3. Breaking any stem immediately bleeds thick white milk.

What is the best way to get rid of it?

Wear thick rubber gloves. Locate the center of the circular mat where the taproot enters the ground. Grip the crown firmly and pull straight up; the entire plant will pop out. Apply organic mulch to prevent seeds.