Physocarpus opulifolius ‘Diablo’ (also sold as ‘Diabolo’ or ‘Monlo’) is a purple‑leaved ninebark prized for its deep burgundy foliage, exfoliating bark, and clusters of creamy‑white spring flowers. It is a hardy, low‑maintenance shrub widely used in hedges, borders, and specimen plantings. Size — Typically 4–8 ft tall and wide, sometimes up to 10 ft.
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Best color in full sun.
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Tolerates part shade, but foliage may fade to green in heat or low light.