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Rosaceae FAMILY

Rosa woodsii

Rosa woodsii

Edibility
2/5
Medicinal
2/5

Safety & Hazards

There is a layer of hairs around the seeds just beneath the flesh of the fruit. These hairs can cause irritation to the mouth and digestive tract if ingested.

Cultivation Details

HabitDeciduous Shrub
Growth—

Rosa woodsii is a very cold-hardy plant, being able to tolerate temperatures down to around -30°c when fully dormant[1]. Most Rosa species require a sunny position if they are to flourish and flower well. They prefer a circumneutral pH, succeeding in a range of soil texturess so long as they are moist but well-drained[2, 1]. Rosa woodsii is a variable plant, treated here as comprising five subspecies in addition to the main species:- Subspecies arizonica (Rydb.) W.H.Lewis & Ertter. Native to Arizona, Nevada, New Mexico, Utah Subspecies gratissima (Greene) W.H.Lewis & Ertter. Native to California and Nevada Subspecies manca (Greene) W.H.Lewis & Ertter. Native to Arizona, Colorado, New Mexico, Utah, Wyoming Subspecies puberulenta (Rydb.) W.H.Lewis & Ertter. Native to Arizona, Colorado, Nevada, New Mexico, Utah, Wyoming Subspecies ultramontana (S.Watson) R.L.Taylor & MacBryde. Native from British Columbia to California and New Mexico Closely related to and hybridizes in the wild with Rosa blanda[2]. Rose species will often hybridize freely with other members of the genus[3]. Plants in this genus are notably susceptible to honey fungus[1].

Propagation

Seed. Rose seed often takes two years to germinate. This is because it may need a warm spell of weather after a cold spell in order to mature the embryo and reduce the seedcoat[3]. One possible way to reduce this time is to scarify the seed and then place it for 2 - 3 weeks in damp peat at a temperature of 27 - 32°c (by which time the seed should have imbibed). It is then kept at 3°c for the next 4 months by which time it should be starting to germinate[3]. Alternatively, it is possible that seed harvested 'green' (when it is fully developed but before it has dried on the plant) and sown immediately will germinate in the late winter. This method has not as yet(1988) been fully tested[3]. Seed sown as soon as it is ripe in a cold frame sometimes germinates in spring though it may take 18 months. Stored seed can be sown as early in the year as possible and stratified for 6 weeks at 5°c[1]. It may take 2 years to germinate[1]. Prick out the seedlings into individual pots when they are large enough to handle. Plant out in the summer if the plants are more than 25cm tall, otherwise grow on in a cold frame for the winter and plant out in late spring. Cuttings of half-ripe wood with a heel, July in a shaded frame. Overwinter the plants in the frame and plant out in late spring[4]. High percentage[4]. Cuttings of mature wood of the current seasons growth. Select pencil thick shoots in early autumn that are about 20 - 25cm long and plant them in a sheltered position outdoors or in a cold frame[4, 1]. The cuttings can take 12 months to establish but a high percentage of them normally succeed[4]. Division of suckers in the dormant season. Plant them out direct into their permanent positions. Layering. Takes 12 months[2]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Rosa+woodsii>

Pollinators

Bees

References

  1. [1]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
  2. [2]Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. — Bean. W. · Murray · 1981 · ISBN - ↩︎A classic with a wealth of information on the plants, but poor on pictures.
  3. [3]Hardy Woody Plants from Seed. — McMillan-Browse. P. · Grower Books · 1985 · ISBN 0-901361-21-6 ↩︎Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
  4. [4]Propagation of Trees, Shrubs and Conifers. — Sheat. W. G. · MacMillan and Co · 1948 · ISBN - ↩︎A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
  5. [5]Flora of China — Missouri Botanical Garden Press; St. Louis. · 1994 · http://flora.huh.harvard.edu/china/ ↩︎An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
  6. [6]Flora of N. America — http://flora.huh.harvard.edu/fna/ ↩︎An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
  7. [7]A Field Guide to Rocky Mountain Wildflowers — Craighead. J., Craighead. F. and Davis. R. · The Riverside Press · 1963 · ISBN 63-7093 ↩︎Excellent little pocket guide to the area, covering 590 species and often giving details of their uses.
  8. [8]Edible Wild Fruits and Nuts of Canada. — Turner. N. J. and Szczawinski. A. · National Museum of Natural Sciences · 1978 · ISBN - ↩︎A very readable guide to some wild foods of Canada.
  9. [9]Flowers of the Southwest Mountains. — Arnberger. L. P. · Southwestern Monuments Ass. · 1968 · ISBN - ↩︎A lovely little pocket guide to wild plants in the southern Rockies of America.
  10. [10]Native American Ethnobotany — Moerman. D. · Timber Press. Oregon. · 1998 · ISBN 0-88192-453-9 ↩︎Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
  11. [11]Oriental Herbs and Vegetables, Vol 39 No. 2. — Brooklyn Botanic Garden · Brooklyn Botanic Garden · 1986 · ISBN - ↩︎A small booklet packed with information.
  12. [12]Cornucopia - A Source Book of Edible Plants. — Facciola. S. · Kampong Publications · 1990 · ISBN 0-9628087-0-9 ↩︎Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
  13. [13]Discovering Wild Plants - Alaska, W. Canada and the Northwest. — Schofield. J. J. · Alaska Northwest Books; Alaska · 2003 · ISBN 0882403699 ↩︎A nice guide to some useful plants in that area.
  14. [14]Native Harvests. — Kavasch. B. · Vintage Books · 1979 · ISBN 0-394-72811-4 ↩︎Another guide to the wild foods of America.
  15. [15]The New Plantsman. Volume 1, 1994. — Matthews. V. · Royal Horticultural Society · 1994 · ISBN 1352-4186 ↩︎A quarterly magazine, it has articles on Himalayacalamus hookerianus, hardy Euphorbias and an excellent article on Hippophae spp.
  16. [PFAF]Plants for a Future — pfaf.org ↩︎