F is for foam flower, more properly named Tiarella cordifolia.  Foam flower is a delicate perennial shade loving groundcover that sends up plumy racemes of white or pale pink flowers in the spring and early summer. The heart shaped foliage explains the ‘cordifolia’ in its proper name. When the flowers are finished the plant will continue to spread by runner (stolons) over the ground making a very attractive groundcover.  It prefamp humusy soil. However it cannot thrive where…