Achillea tomentosa L.
Achillea tomentosa, commonly known as woolly yarrow, is a perennial.
Achillea tomentosa was described by Carl Linnaeus in 1753. The name is considered as validly published.
Achillea tomentosa is a species in the genus Achillea which contains approximately 171 to 348 species and belongs to the family of the Asteraceae (Aster Family). The type species of the genus is Achillea millefolium.
The perennials have a mat-forming habit and reach heights of 30 to 35 centimetres.
Achillea tomentosa is deciduous. The mid-green, simple leaves are alternate. They are linear with pinnatifid margins. The leaves are around 5 centimetres large and have a glabrous surface.
Flowers and Fruits
Achillea tomentosa produces racemes of yellow many-stellate flowers from May to July.
The perennials produce achenes.
Achillea tomentosa is native to France, Italy and Switzerland.
The perennials prefer a sunny situation on dry soil. The substrate should be sandy loam with a pH between 4 and 7,5. They tolerate temperatures down to -40Â°C (USDA zone 3).
Classification after Prof. Dr. Sieber
Achillea tomentosa is considered a collector's perennial. The recommended planting distance is 20 to 25 centimetres, the perennials are best planted in groups of 5 to 10. Suited for rockeries and for roof greening, as well as suited as cemetery plant and as container plant.
Maintenance and Propagation
Propagate by sowing or by division.
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.