Heterotheca villosa (Pursh) Shinners
Heterotheca villosa, commonly known as hairy goldenaster, is a perennial.
Heterotheca villosa was already described and the name validly published by Frederick Traugott Pursh. It was Lloyd Herbert Shinners, however, who reclassified it into todays valid botanical systematics in 1951.
The perennials reach heights of 5 to 100 centimetres, the main growing season is in spring and summer. They have a erect habit and are comparatively short-lived.
Heterotheca villosa is deciduous. The mid-green, simple leaves are alternate. They are oblanceolate, entire and petiolate. The foliage is porous.
Flowers and Fruits
Heterotheca villosa produces corymbs of showy, yellow many-stellate flowers from July to October.
The perennials produce brown achenes from summer to autumn.
Heterotheca villosa is native to western Canada, the Northwest of the US, the Rocky Mountains, the northern Prairie States of the US, the central Northeast of the US, California, the Southwest of the US and the southern Prairie States of the US.
The perennials prefer a sunny situation on dry to moderately moist soil. The substrate should be gritty-sandy or gritty-loamy and comparatively poor with a pH between 6 and 7,5. The plants need a soil depth of at least 36 centimetres for good growth. They tolerate temperatures down to -29Â°C (USDA zone 5) and need a frost-free period of at least 19 weeks.
Tolerance of special soil conditions
- none: anaerobic soil
- low: soil salinity
- medium: drought, calcareous soil
Suited for rockeries.
Maintenance and Propagation
Propagate by sowing.
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.