Creeping Mahonia This evergreen sub-shrub creeps happily under trees and shrubs, thriving in a partly shaded environment. Its vigorous rooting habit makes it well suited for erosion control situations on banks or slopes. It bears bright yellow flowers in April that are followed by blue-black berries in July. Plant in part shade, well-drained soil and water twice-a-week. Not bothered by rabbits, squirrels nor deer. (Plant 3 ft. on center)