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Sorbus (scopulina)

Tara Luna
USDI NPS - Glacier National Park
West Glacier, Montana 59936
(406) 888-7835
http://plant-materials.nrcs.usda.gov/azpmc
Family Scientific Name: Rosaceae
Family Common Name: Rose family
Scientific Name: Sorbus scopulina Greene scopulina Greene
Common Name: Cascade Mountain-ash
Species Code: SORSCO
Ecotype: Two Medicine, 1585m elevation, Glacier National Park, Glacier Co., MT.
General Distribution: S. scopulina occurs from Alaska to northern California, east to western Alberta, and south to North and South Dakota, Montana, Wyoming, Colorado, and New Mexico.
Propagation Goal: plants
Propagation Method: vegetative
ProductType: Container (plug)
Stock Type: 800 ml containers
Time To Grow: 17 Months
Target Specifications: Stock Type: Container cutting<br> Height: 30 cm<br> Caliper: 1.0 cm<br> Root System: firm plug in container.
Propagule Collection: Vegetative Propagation Method: Pre-Rooting
Type of Cutting: Late summer semi-hardwood stem cutting collected in early August.
Cuttings were taken from nonflowering stem tip shoots.
Propagule Processing: Cuttings are kept moist and under refrigeration prior to pre treatment.
Pre-Planting Treatments: Semi-hardwood tip cuttings were 15 to 25 cm in length and .3 to 1.3 cm in diameter.
Cuttings were treated with 4000 ppm Hormex rooting powder and placed in 1:1 (v:v)sand and perlite medium in a mistbed with bottom heat.
Rooting %: 47% after 6 weeks in mistbed.
Cuttings with stem caliper of 9 mm to 1.2 cm rooted. Cuttings with smaller stem calipers failed to root.
Time to Transplant: 6 weeks. Cuttings overwintered in mistbed and were potted the following spring.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 The outdoor mistbed has automatic intermittent mist that is applied at 6 second intervals every 6 minutes. Too frequent misting will result in leaf and stem rot. Misting frequency is increased or decreased according to daily outdoor temperature and wind.
Bottom heat is maintained at 21C with heating cables 12 cm beneath rooting medium. Mistbed is covered with shadecloth during rooting.
After cuttings are potted, they are moved to an outdoor shadehouse for 4 weeks. They are later moved to full sun exposure in the outdoor nursery and are irrigated with Rainbird automatic irrigation system in early morning until containers are thoroughly leached.
Average growing season of nursery is from late April after snowmelt until October 15th.
Establishment Phase: After lifting from the mistbed the following spring, cuttings were upotted into 800 ml containers.
Length of Establishment Phase: 4 weeks
Active Growth Phase: Plants are fertilized with 20-10-20 liquid NPK at 100 ppm during the active growth phase.
Length of Active Growth Phase: 16 weeks
Hardening Phase: Cuttings overwinter in mistbed the first year. Plants are outplanted the second year.
Length of Hardening Phase: 4 weeks
Harvesting, Storage and Shipping: Total Time To Harvest: 1.5 years estimated from cuttings
Harvest Date: September
Storage Conditions: Overwinter in outdoor nursery under insulating foam and snow.
Length of Storage: 5 months
Other Comments: S. scopulina inhabits well drained soils along streams, avalanche chutes and rocky hillsides.
There are 2 botanical varieties: scopulina, and cascadensis.
Berries are an important food source in fall to many species of migrating songbirds and bears and small mammals.
References: Flora of the Pacific Northwest, Hitchcock and Cronquist, University of Washington Press, 7th printing, 1973.
Seeds of the Woody Plants in North America, Young and Young, Dioscorides Press, 1992.
Seeds of the Woody Plants in the United States, Agriculture Handbook No. 450, U.S.F.S., Washington D.C., 1974.
Seed Germination Theory and Practice, 2 nd Edition, N. Deno, published June 1993.
Glacier Park Native Plant Nursery Propagation Records, unpublished.
Seeds: Ecology, Biogeography and Evolution of Dormancyand Germination, Baskin and Baskin, Academic Press,1998.

Citation:

Luna, Tara; Hosokawa, Joy. 2008. Propagation protocol for production of Container (plug) Sorbus scopulina Greene plants 800 ml containers; USDI NPS - Glacier National Park West Glacier, Montana. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/05/18). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.