Euphorbia wulfenii is a bold, architecturally appealing evergreen perennial renowned for its dramatic chartreuse spring flower clusters and striking foliage. Ideal for Mediterranean, gravel, or modern gardens, it brings both structure and vibrant seasonal interest—just handle with care due to its irritant sap.
A striking evergreen (or semi-evergreen) perennial sub-shrub, it grows erect and sparsely branched, typically reaching 90 cm to 1.5 m in height and spread.
Its foliage is composed of leathery, glaucous blue-grey to green leaves, often arranged in whorls around the stems, giving it a sculptural, architectural presence.
From early spring to early summer (generally March–May), it produces large, rounded clusters of greenish-yellow (chartreuse) bracts atop its stems. These bracts surround the small true flowers, creating a bold visual effect.
The colour contrast between the foliage and floral bracts adds vibrant texture and seasonal drama to borders and alpine or gravel gardens.
Suited to full sun, in well-drained soils—cake chalk, loam, or sand; tolerant of both acidic and alkaline soils.
Drought-resistant and thrives in Mediterranean-type environments once established.
Hardy to around –10°C in the UK (H4 rating), and suitable for USDA Zones ~6–8.
Low-maintenance: cut back spent flower stems to the base after blooming to rejuvenate the plant; division or cutback every few years maintains vigor.
Attracts butterflies and other pollinators with its nectar-rich bracts.
Often used as a specimen plant or architectural feature in mixed borders, gravel gardens, and contemporary plantings.
Like all euphorbias, this plant exudes a milky sap that can cause skin and eye irritation, and is harmful if ingested. Always wear gloves and protective clothing when handling.
Gardeners have shared cautionary experiences such as:
“When cut, the stems will ooze a white liquid… if it’s sunny when you get sap on your skin, you’ll end up with blisters.
“Very hardy… It can cause permanent blistering… wear gloves and long sleeves.
| Feature | Details |
|---|---|
| Size | 90 cm to 1.5 m tall and wide |
| Foliage | Evergreen, blue-green whorled leaves |
| Flowers | Chartreuse green-yellow bracts in spring |
| Light & Soil | Full sun, well-drained soils; adaptable pH |
| Hardiness | UK H4 (≈ –10 °C), USDA Zones ~6–8 |
| Wildlife Value | Pollinator-friendly (butterflies) |
| Maintenance | Low; cut back flower stems after bloom; divide as needed |
| Safety | Toxic sap—wear gloves, protect skin & eyes |
In summary, Euphorbia wulfenii is a bold, architecturally appealing evergreen perennial renowned for its dramatic chartreuse spring flower clusters and striking foliage. Ideal for Mediterranean, gravel, or modern gardens, it brings both structure and vibrant seasonal interest—just handle with care due to its irritant sap.
| Size | 2 Litre, 3 Litre |
|---|
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