4" tall x 18" wide (cutting propagated). This low growing "yarrow" is at home in the rock garden or perennial border when used as a ground cover or edging plant. A reliably heavy bloomer, it covers itself with bright clusters of small white flowers for weeks in the late spring. Its' dense gray-green foliage is mat-like and ever (particularly in milder climates), giving the plant season-long interest. Recommended planting companions include Pink Armeria maritima 'Compactum' and Blue Penstemon virens.