Berberis thunbergii 'Chocolate Summer'Dark purple brown leaves are borne on the red stems of Berberis thunbergii 'Chocolate Summer'. This attractive shrub has an upright form, making it an ideal choice for a short hedge or for adding dramatic colour contrasts to borders. In late spring, it produces dainty yellow flowers, loved by pollinators, followed by small orange red berries for late summer interest. Late spring flowering. Best in full sun to semi shade in any well drained soil.