St. John's Wort, Sunburst St. John's WortSunburst St John's Wort is a compact semi evergreen shrub with blue green lance shaped leaves and exfoliating bark on mature plants. The small yellow flowers with numerous long stamen bloom in summer and are followed by narrow red brown fruit capsules that persist in winter. Best bloom in full sun and well drained soils. Type: Shrub Height: 3' 4' Spread: 3' 4 Spacing: 3 USDA Hardiness Zone: 5 8 Culture: Full Sun, Part Sun Bloom Color: Yellow Season of