Rosa acicularis Lindl.
Rosa acicularis, commonly known as prickly rose, needle rose, is a shrub.
Rosa acicularis was described by John Lindley. The name is considered as validly published.
The shrubs reach heights of 1 to 3 metres and are comparatively fast-growing and short-lived. They have a erect habit and produce multiple stems, the main growing season is in spring and summer.
Wood and Bark
Rosa acicularis is deciduous. The imparipinnate leaves are alternate. The elliptic leaflets are serrate and petiolate. The foliage is porous.
Flowers and Fruits
Rosa acicularis produces solitary showy, pink five-stellate flowers from June to July.
From summer to autumn the shrubs produce an abundance of ornamental, edible red hips that are persistent on the plant.
Rosa acicularis is native to Canada, the Rocky Mountains, the northern Prairie States of the US, the central Northeast of the US and the Northeast of the US.
The shrubs prefer a sunny to half-shady situation on dry to moderately moist soil. The substrate should be sandy-loamy or gritty-loamy and comparatively poor with a pH between 6,8 and 7,5. The plants need a soil depth of at least 15 centimetres for good growth. They tolerate temperatures down to -45Â°C (USDA zone 2) and need a frost-free period of at least 29 weeks.
Tolerance of special soil conditions
- none: soil salinity, anaerobic soil
- low: drought, calcareous soil
The ornamental value of Rosa acicularis lies especially in the attractive autumn aspect and its fragrance. The recommended planting distance is 90 to 140 centimetres.
Maintenance and Propagation
- Plants can be cut back down to the trunk (coppicing) as necessary.
Propagate by sowing. The seeds require vernalization. Also by cuttings.
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.