Foamflower -- Tiarella cordifolia

These are in the 4" round pots.

Features: An attractive groundcover, Foamflower spreads by runners to form dense clumps of heart-shaped lobed leaves with airy spikes of tiny white flowers floating above. Foliage can turn bronze in fall, partly evergreen in winter. Good in woodland gardens. Attracts butterflies.

Light: Partial sun to full shade

Soil: moist, but not wet, well-drained

Height: 8 to 12 inches including flower spikes

Bloom: May, early June

See more information and photos at: Missouri Botanical Garden and Midwest Groundcovers

Images from Wikipedia, Midwest Groundcovers