rose flowers are actually a flat terminal corymbs of small 1/4" flowers
Leaves
simple, dark green, finely divided giving them a fern-like texture and strongly aromatic larger basal leaves have long petioles, smaller upper leaves are sessile
Stems
spreads by rhizoms
Dimensions
1.5-2 feet, space 18 inches on center, mat-like growth habit
Maintenance
The flower stalks are weak and tend to flop. After flowering shear back the plants and they will form a dense mat of foliage. Plants are aggressive spreaders
Propagation
easy by division
Native Site
The species plant Common Yarrow (Achillea milefolium) is native to Europe and Western Asia and considered to be a weed in many areas.
Misc Facts
The species plants have been in cultivation prior to 1440 and used as a herbal remedy for many aliments. The Greek name honors Achilles a warrior of the Trojan wars.
Author's Notes
I have grown many different varieties of Achillea millefolium. There seems to be a few secrets to successfully growing them. Avoid rich, moist, poorly drained soils and plant in a full sun site. Also cut back hard after the bloom fades