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Sun Spurge

Euphorbia helioscopia

Also listed as Galarhoeus helioscopius, Tithymalus helioscopius

Also known as Spurge, Wartweed, Wartwort

☀️ full sun💧 low water

Climate Match for your location

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A fast-growing annual spurge with small yellowish-green flowers and distinctive umbrella-like leaf arrangements. It thrives in sunny spots and dry soils with minimal care.

Why grow it

Sun spurge establishes quickly in poor, well-drained soils where many ornamentals struggle, making it useful for gap-filling or erosion control in sparse plantings. Compared to other annual spurges, its compact habit and fine texture suit tight spaces, though it offers modest visual interest and lacks the ornamental appeal of perennial Euphorbia species. Its tolerance for neglect and dry conditions makes it a low-input option for transitional or disturbed areas.

Watch out for

Sun spurge readily self-seeds and can appear in subsequent seasons if allowed to mature, so deadhead spent flowers if you want to prevent volunteer seedlings. While it tolerates poor soil, it will spread more vigorously in consistently moist conditions, so allow soil to dry between waterings to keep it in check. The plant's sap can irritate sensitive skin, so wear gloves when handling or weeding.

Overview

Form
Upright
Growth Rate
fast
Size
0.5–1.5′ tall × 0.5–1′ wide
Dormancy
annual
Family
Euphorbiaceae
Dynamic accumulator

Native Range

Europe and western Asia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SpringSummer

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Companion Planting

Plants well with