Physocarpus opulifolius Nugget

Physocarpus opulifolius 'Nugget' is a beautiful variety with golden foliage of the sapwood-leaved bush, a deciduous and hardy shrub. Its bright foliage is precious for bringing life to the partially shaded areas of the garden. Its white flowering in early summer, which takes the form of many small corymbs, is also very decorative. It gives way to small ornamental red fruits, which add to its charm. Lastly, winter allows for the appreciation of the exfoliating brown bark, creating a pleasing scene to behold. Requiring little maintenance, this physocarpus is perfect in mixed borders, as an informal hedge, or even planted as a specimen.

Physocarpus opulifolius belongs to the large Rosaceae family, which includes most of our temperate fruit trees, many wild plants, and numerous ornamental genera such as roses. It is native to North America, where it is found naturally in a wide geographic range, covering a diverse range of soils and climates. This explains its great adaptability and its interest for ornamental use, as the species itself has already quite decorative foliage.
However, it is somewhat overshadowed by different cultivars with colourful, variegated, golden, orange, purple, almost black foliage... 'Nugget' is one of these varieties with golden yellow foliage that immediately captivates the eye. This medium-sized shrub, with a more or less ball-shaped habit, reaches 1.70m (6ft) to 2m (7ft) in all directions. Its vegetation is relatively dense, carried by branches that grow in all directions, giving it a beautiful appearance in winter when the leaves have fallen, revealing its decorative brown bark, which exfoliates over time. Well-golden in spring, the foliage turns to a tender green in summer. The medium-sized leaves, about 6-8cm (2-3in) long and 4-5cm (2in) wide, are trilobed, with each lobe being slightly dentate. Their evocative shape gives this shrub the nickname of Sapwood-leaved Physocarpus. The flowering usually occurs in May-June and takes the form of white corymbs, in the shape of domes, about 4-5cm (2in) in diameter. They consist of a cluster of small flowers with five petals and protruding stamens, which are highly appreciated by pollinating insects. They then develop into red fruits, quite decorative and enjoyed by birds in autumn. During this season, the vegetation takes on a golden hue again, which is superb, and the small fruits contrast well against it.

Beneficial to wildlife, this shrub is extremely cold-resistant, it tolerates pruning well, which is not really necessary unless you want to limit its growth; it only fears heatwaves and drought. It is therefore best planted in partial shade, where its bright foliage will be perfectly highlighted. Dare to create strong contrasts by planting Cotinus Grace in the background, a smokebush tree whose purple foliage turns fiery red in autumn, creating an incredible scene with the 'Nugget' physocarpus. If you lack space, opt instead for the Weigela florida Naomi Campbell, a compact and colourful shrub that will naturally find its place at the foot of the Physocarpus. At its base, you can also plant some Heucheras, low-growing perennials with foliage that showcases almost all the colors of the vegetable kingdom, thus constituting the first vegetation zone on the edge of your border.