Family Rosaceae
Originating from the USA

• Deep burgundy, near-black leaves with serrated, lobed edges.
• White-pink dome-shaped flower clusters bloom in summer.
• A bold deciduous shrub, thriving in non-alkaline soil, sun or part shade.

Ignite your garden with Physocarpus opulifolius ‘Diabolo’—a USA native of smouldering intensity. Its burgundy wine-red leaves darken to near-black, forming a 2.5m-tall-and-wide fountain in 5-10 years. Lobed, veined, and serrated, they cascade on arching stems. Summer delivers white-pink dome-shaped flowers, a vivid contrast in Norfolk and Suffolk borders. The dark foliage lifts brighter plants, anchoring any scheme.

Grown for drama, Diabolo thrives in East Anglian and UK gardens, preferring non-alkaline, well-drained soil. Full sun deepens its hues; part shade lightens them slightly. Use in mixed borders, as a specimen, or in large pots—it’s low-care, deer-resistant, and wind-tough for coastal or urban settings.

Care Tips for Physocarpus opulifolius ‘Diabolo’

• Soil & Sun: Needs non-alkaline, well-drained soil; full sun deepens leaf colour, part shade works with lighter tones.
• Planting: Space 2.5m in borders to let stems arch freely; use wide pots for patios or small gardens.
• Watering: Water moderately for 1-2 seasons to establish roots; drought-tolerant thereafter, even in windy spots.
• Pruning: Trim lightly after flowering to shape or prune hard in early spring for compact regrowth. Form to any shape; remove old stems in late winter for vigour—minimal upkeep.

Elevate your garden with moody elegance. Physocarpus Diabolo blends dark foliage and summer blooms into East Anglian and UK landscapes. Its arching form and vivid leaves make it a year-round star—American depth meets coastal toughness.

Planting Suggestions for the Diabolo Ninebark

Supercharge a colourful, riotous planting or elevate silver architectural plants with Ninebark’s irresistible dusky tones. Though not Mediterranean, it sets a brooding backdrop for that style, thriving in similar conditions. It suits exposed schemes on north Norfolk’s coasts or in the teeth of Suffolk’s dry easterlies. Dramatic species like Cynara cardunculus stand out, while Butia capitata and Chamaerops humilis’ silver foliage contrasts boldly.

For vibrant pops, add Verbena bonariensis, Salvia ‘Royal Bumble’, Rudbeckia ‘Little Henry’, and Callistemon ‘Havering Gold’—their purples and yellows play off Diabolo’s flowers and burgundy depth, building dynamic borders in UK gardens.

For further reading on Physocarpus opulifolius visit: https://treesandshrubsonline.org/articles/physocarpus/