Spiraea japonica 'Alpina' ALPINE or DAPHNE SPIRAEA

Spiraea japonica 'Alpina'
ALPINE or DAPHNE SPIRAEA

18-24 in. (Zone 4)  Very dwarf form of Spiraea which grows into a dense,  well-formed mound.  Pink flowers in late spring continue well into the summer.  A must for the sunny rock garden.