If you want a dramatic, easy-care native shrub with season-long color, Physocarpus opulifolius 'Diabolo' (Ninebark 'Diabolo') delivers. This tough ninebark stands out for its rich burgundy to purple foliage, plus spring clusters of small, pale flowers that contrast beautifully against the dark leaves. As the season progresses, you will also appreciate the plant's exfoliating bark, which adds texture and winter interest when the leaves are gone.

Plant it where it can show off its best color: full sun is ideal, though it will tolerate part shade (with deeper shade often leading to greener foliage). Mature size is typically 60-96 inches tall, with a broad, arching habit that can spread wide. Give it room to fill out, especially if you want it as a specimen or informal screen; for hedging, you can plant closer and prune regularly to maintain shape.

Diabolo ninebark adapts to many soils, including heavier clays, as long as drainage is reasonable. Water consistently during the first growing season to establish a strong root system. Once established, it is fairly drought tolerant, but it will look its best with occasional deep watering during extended dry spells. A 2-3 inch mulch layer helps moderate soil temperature and conserve moisture; keep mulch a few inches away from the stems.

Pruning is straightforward. You can lightly shape after bloom, or use renewal pruning in late winter by removing a portion of the oldest stems at the base to encourage vigorous new growth and better foliage color. With a little sun and simple maintenance, you get a durable shrub with bold foliage, spring bloom, and attractive bark for year-round appeal.

Specifications

• Cold hardiness zone: 3-7 (-40 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Mature height: 60-96"
• Spread: 72-108"
• Tolerant of: Drought
• Native to the U.S.: Yes

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