Image from USDA plant database10
Plant Data Sheet: Sitka Mountain-Ash (Sorbus sitchensis)
Local occurrence (where, how common)
Plant strategy type/successional stage (stress-tolerator, competitor, weedy/colonizer, seral, late successional)
Sitka mountain-ash may be found in the company of conifers.8 Among some of the species associated with it are Douglas-fir, Western white pine, Sitka spruce, larch, hemlock, cedar, silver-fir, red-fir, and grand-fir.2
May be collected as: (seed, layered, divisions, etc.)
Collection restrictions or guidelines
Seed germination (needs dormancy breaking?)
Seeds may be planted in the fall or early winter without stratifying. Otherwise, seeds sown in the spring need stratification of 60 or more days at 32-41°F.2
Seed life (can be stored, short shelf-life, long shelf-life)
Recommended seed storage conditions
Information on seed storage conditions was unavailable.
Propagation recommendations (plant seeds, vegetative parts, cuttings, etc.)
It is recommended that
Soil or medium requirements (inoculum necessary?)
Installation form (form, potential for successful outcomes, cost)
Recommended planting density
For 10 inch cubed containerized shrubs, it is recommended that they be planted 3 feet on-center.11
Care requirements after installed (water weekly, water once etc.)
Normal rate of growth or spread; lifespan
Effects Information System,
(3) Hansen, W. Native Plants of the Northwest. http://www.nwplants.com. Retrieved April 12, 2006.
C.L. and Cronquist, A. Flora of the
(5) Jepson Horticultural Databse. http://ucjeps.berkeley.edu/cgi-bin/get_hort. Retrieved April 12, 2006.
(7) Permaculture Information Web. http://permaculture.info. Retrieved April 12, 2006.
(8) Plants for a Future. http://www.pfaf.org. Retrieved April 12, 2006.
(9) Pojar, J. and MacKinnon, A.
Plants of the
NRCS. 2006. The
Plants Database, 6 March 2006 (http://plants.usda.gov).
(11)Washington Department of Fish and Wildlife, Planting Considerations and Erosion-Control Fabrics. http://wdfw.wa.gov/hab/. Retrieved April 12, 2006.
Data compiled by (student name and date)
Joy Wood 4/24/06