Rosa californica

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Rosa californica Cham. & Schltdl.

Rosaceae

Life form: shrub
Usage: ornamental plant

Exposure: sun - Exposure: half shade   5

Moisture: dry bis Moisture: moderately moist

Soil: sandy loam - Soil: gritty loam

Arrangement: alternate
Leaves: decidious

Shape: ovate

Division: imparipinnate

Shape: five-stellate
Fruit: hip

63D / e981ab 

Inflorescence: corymb

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Rosidae
Superordo:
Rosanae
Ordo:
Rosales

Rosa californica, commonly known as Californian rose, is a shrub.

Naming

Taxonomy

Rosa californica is a species in the genus Rosa which contains approximately 180 to 623 species and belongs to the family of the Rosaceae (Rose Family).

Characteristics

Growth

The shrubs reach heights of 3 metres and are comparatively fast-growing and short-lived. They have a rounded habit and form thickets and spread rapidly. The main growing season is from spring to fall.

Wood and Bark

Leaves

Rosa californica is deciduous. The dark-green, imparipinnate leaves are alternate. The ovate leaflets are petiolate. The foliage is dense in summer and porous in winter.

Flowers and Fruits

Rosa californica produces corymbs of showy, pink five-stellate flowers from May to August.

In autumn the shrubs produce an abundance of ornamental, edible orange hips that are persistent on the plant.

Root System

Distribution

Rosa californica is native to Oregon, California and North Mexico.

Cultivation

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 7 and 8. The plants need a soil depth of at least 15 centimetres for good growth. They tolerate temperatures down to -29°C (USDA zone 5) and need a frost-free period of at least 39 weeks.

Tolerance of special soil conditions

  • none: soil salinity, anaerobic soil, calcareous soil
  • medium: drought

Uses

The ornamental value of Rosa californica lies especially in the attractive autumn aspect and its fragrance. The recommended planting distance is 1,2 to 1,8 metres.

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.

Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große 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.

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