Shrub for sun, mostly shade, bright shade in zone 4a-9b. Yellow flowers. Up to 12 x 18 inch Also known as Berberis thunbergii 'Gold Beret', Gold Beret Barberry, Sunjoy???? Gold Beret Barberry, Berberis Sunjoy???? Gold Beret, Berberis thunbergii 'Sunjoy