Divide them in early spring before flowering or later in the summer if desired.  Tiarellas do well in colder climate zones but extended winter wetness will cause damage.  Decayed leaves should be removed.

Plant with:  Astilbe, Columbine, Coral Bells, Cordyalis, Hosta, Lilyturf, Lungwort and Meadow Rue.

Planting Instructions:  Perennials
Water & Fertilizer Schedule