Sunjoy® Mini Saffron Barberry

Sunjoy® Mini Saffron is the Sunjoy series name for Berberis thunbergii ‘Kasia’, a compact Japanese barberry with yellow foliage and orange-edged new growth. Leaves develop orange-red tones in fall, while the plant keeps a low, rounded mound. ## Form and Foliage Proven Winners lists the cultivar at about 18–24 inches tall and 2–2½ feet wide. Its [breeder profile](https://www.provenwinners.com/plants/berberis/sunjoy-mini-saffron-barberry-berberis-thunbergii) identifies ‘Kasia’ and patent PP24817; [Spring Meadow Nursery](https://springmeadownursery.com/plantfinder/sunjoy-mini-saffron-03240) also describes the compact mound and yellow foliage. A five-year patent specimen measured about 28 by 52 centimetres, illustrating how size can vary with age and growing conditions. ## Placement and Seasonal Interest Plant in full sun and well-drained soil. Proven Winners lists USDA zones 4–8 and notes resistance to deer, heat, and sun-scald. Orange-edged new leaves provide early contrast, with orange-red color in fall. ## Maintenance Water regularly while the shrub establishes, then monitor during extended dry spells. Established plants tolerate dry periods. Pruning is seldom needed; trim lightly in summer if shaping is necessary and avoid severe shearing into older stems.