Foam Flower Foam flower, or Tiarella, is a good woodland groundcover. It prefers partial shade in well drained soils that retain some moisture. Foliage is often variegated and deeply cut. Bottle brush like flowers appear in late spring through summer.
20 Colorful Plants for Shade Gardens Amethyst flower (Browallia hybrids): If you love blue flowers, this annual is a must. Amethyst flower has star-shaped blooms of brilliant blue and sky blue, as well as violet and white.