Euphorbia prostrata

Prostrate Spurge Identification & Control

Prostrate Spurge, also known as Creeping Spurge or Ground Sand-mat, is an exceptionally stubborn, highly toxic annual broadleaf weed in the Euphorbiaceae family. Native to tropical America but globally naturalized, it is a major nuisance in dry lawns, gravel pathways, and greenhouse floors. It is highly similar to Spotted Spurge but features slightly smaller, uniform green leaves without a red center spot, creeping flat to form dense mats that bleed highly toxic, skin-irritating milky sap when broken.

Sunlight Full Sun to Partial Shade

Watering Tolerance Low

Soil Adaptability Dry Sand / Sterile Clay / Poor Soil

Growth Temp 12°C - 42°C

Danger / Toxicity Toxic Milky Sap / Pet Toxic

Botanical macro photography of Prostrate Spurge (Euphorbia prostrata) - Plant AI care and control database

How to Identify Prostrate Spurge

A low-growing annual forming flat green mats radiating from a central root, with tiny uniform green opposite leaves, and toxic white sap.

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Sticky Milky Sap: Broken stems immediately bleed a thick, sticky, milky-white sap that is highly corrosive and irritating to skin.
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Tiny Uniform Green Leaves: Opposite oval leaves (3 to 8 mm long) are solid light green-to-reddish green, completely lacking a dark spot.
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Creeping Prostrate Stems: Stems crawl flat along the ground, highly branched and frequently tinged with a deep pink-red color.

💡 Plant AI Tip: Prostrate Spurge has incredibly fast-growing seeds! It can grow from seed to a mature, seed-producing plant in just 3 weeks in summer heat, making rapid hand-weeding essential before it takes over.

Complete Care & Management Guide

Access highly technical, scientific management directives to control or cultivate Prostrate 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.

Highly versatile. Thrives in Full Sun but exhibits moderate shade tolerance, allowing it to colonize shaded pathway margins and compact orchard margins.

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 Prostrate 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

Toxic Latex Burn

Symptoms: Symptoms: Redness, burning sensations, and skin blisters appearing on hands after pulling broken spurge stems.

Action: Action: Wash the area with cold soap water immediately. Keep pets from licking the sticky sap off their paws to prevent oral burns.

Sidewalk Crack Spread

Symptoms: Symptoms: 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

How is Prostrate Spurge different from Spotted Spurge?

Prostrate Spurge (Euphorbia prostrata) has smaller leaves that are solid green without a central red spot. Spotted Spurge (Euphorbia maculata) leaves are larger and feature a highly distinct, dark reddish-purple spot along the midvein.

Is the milky sap toxic to cats?

Yes. Euphorbia sap contains diterpene esters, which are highly irritating to animal mucous membranes. If a cat chews the weed, it can cause severe drooling, mouth swelling, vomiting, and eye irritation if the sap touches their eyes.

Why does it grow so well in sidewalk cracks?

The hot concrete traps heat, warming the soil underneath. This warm sand combined with a lack of competition is perfect for this heat-loving desert native, which thrives on bare gravel and cracked pavement.

What is the best way to get rid of it?

Since it grows from a single, central taproot, hand-pulling is very effective. Grab the center of the mat and pull straight up slowly. Use pre-emergent organic corn gluten meal in early spring to block the seeds.