Coral Bells Firefly Heuchera seeds grow into compact perennial flowering plants with attractive foliage and slender stems carrying small bell-shaped blooms. They are suitable for borders, containers, shaded garden edges, and rock garden spaces. Plants prefer well-drained soil, light shade, and steady moisture. Sow seeds on the surface or with very light covering because they need gentle conditions. Once established, Heuchera adds texture and soft color to home gardens throughout the growing season.