Blackbird Spurge

Blackbird Spurge (Euphorbia x martinii 'Nothowlee')

Blackbird Spurge adds bold, near-black foliage and bright spring color in one compact, evergreen perennial that looks designed from the moment it leafs out. The dark leaves and red-toned stems create instant contrast, then chartreuse flower bracts appear above the foliage to keep borders lively early in the season. It holds its shape well, making it easy to use as a repeatable accent in mixed plantings or as a clean container feature. Once established, it handles heat and short dry spells with confidence, so it stays attractive without constant attention.

Distinctive Features

This spurge forms a tidy, upright clump of lance-shaped leaves that emerge with red tones and deepen to purple-black, especially in brighter light. In spring, clusters of small flowers are surrounded by showy yellow-green bracts that create a vivid contrast against the dark foliage. The plant is evergreen in many climates, providing structure and color beyond the bloom window. Mature size is typically about 16 to 24 inches tall and 16 to 24 inches wide with a compact, bushy habit.

Growing Conditions

• Sun: Full sun to part shade, with fuller sun producing darker foliage and stronger color contrast.
• Soil: Well-drained soil is essential, and it performs well in average soils that are not overly rich.
• Water: Moderate water to establish, then low to moderate water, allowing soil to dry slightly between deep soakings.
• Zones: USDA Zones 6 to 9.
• Notable Traits: Heat and drought tolerant once established, and the milky sap can irritate skin.

Ideal Uses

• Focal Point: Use a tight group as a focal point where the black foliage and chartreuse spring bracts can anchor the planting and sharpen the color palette.
• Mixed Borders: Repeat along sunny borders to add contrast and structure that pairs well with silvers, blues, and warm-toned flowers.
• Containers: Plant in pots for a crisp, evergreen accent that stays attractive from spring through fall.
• Rock and Dry Gardens: Place in well-drained beds where drought-smart plants are needed and foliage contrast matters.

Low Maintenance Care

• Pruning: Cut back stems after flowering to refresh the plant and encourage dense new growth.
• Handling: Wear gloves when cutting or moving plants to avoid skin irritation from sap.
• Watering: Avoid overwatering, since wet soil can reduce vigor and winter survival.
• Mulch: Use a light mulch to moderate moisture, keeping mulch off the crown to maintain airflow.

Why Choose Blackbird Spurge?

• High Contrast: Purple-black foliage delivers a dramatic base layer that makes nearby colors look richer.
• Spring Color: Yellow-green bracts brighten the border early, when many perennials are just starting.
• Compact Form: Stays about 16 to 24 inches tall and wide, so it fits neatly into designed plantings.
• Tough Performance: Handles heat and moderate drought once established with minimal ongoing care.

Blackbird Spurge is most effective when repeated, letting the dark foliage create rhythm and contrast through the planting. Pair it with lighter greens, silver foliage, and spring bulbs for a clean, high-impact look that feels intentional. Give it sun and sharp drainage, then keep watering moderate rather than constant. If you want an evergreen perennial that looks modern and performs in real-world conditions, this one fits.