May 12, 2013. Sometimes referred to as Foamy Bells; Heucherella are a genetic cross between Heuchera, Coral Bells, and Tiarella Foam Flower. They have the amazing foliage of Heuchera and the flower power of Tiarella. The most exciting aspect of Heucherellas is their fantastic foliage which is colorful, large, and often has deeply lobed leaves. These characteristics make this an excellent addition to brighten any shady spot in your garden. Pair it with ferns, hosta, and/or astilbe for an awesome display. Varieties such as ‘Sweet Tea’, ‘Gold Zebra’, and ‘Solar Eclipse’ are just a few that we have to offer.