Osmorhiza (berteroi)

Lee Riley Horticulturist USDA FS - Dorena Genetic Resource Center 34963 Shoreview Road Cottage Grove, Oregon 97424 541-915-7324 541-767-5709 (fax) lee.riley@usda.gov

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Family Scientific Name:	Apiaceae
Family Common Name:	Carrot
Scientific Name:	Osmorhiza berteroi
Common Name:	Mountain sweet-cicely
Species Code:	OSBE
Ecotype:	Rogue River-Siskiyou National Forest, Oregon
General Distribution:	Distribution: Widely distributed throughout much of Washington; southern Alaska to California, east to South Dakota and Arizona. Habitat: Woodlands, from near sea level to moderate elevations in the mountains.
Propagation Goal:	Plants
Propagation Method:	Seed
ProductType:	Container (plug)
Stock Type:	262 ml (16 in3) container
Time To Grow:	14 weeks
Target Specifications:	Stock Type: Container seedling Root System: Firm plug in container.
Pre-Planting Treatments:	Seeds are placed in fine mesh bags into a 1% hydrogen peroxide (3:1 water/3% hydrogen peroxide) soak for 24 hours, rinsed, and placed in water for an additional 4 hours. The bags are placed in sealed containers in refrigeration at 1 to 3 °C for 60 days. It is very important to check seeds weekly. If mold is evident, seeds should be treated with 1% hydrogen peroxide.
Growing Area Preparation/ Annual Practices for Perennial Crops:	Greenhouse growing facility. Seeds are directly sown into containers. Seeds are lightly covered with nursery grit. Growing medium used is 40:20:20:20 peat:composted fir bark:perlite:pumice with Nutricote controlled release fertilizer (18N:6P2O5:8K2O with minors; 180-d release rate at 21C) at the rate of 1.5 gram Nutricote per 262 ml container.
Establishment Phase:	Germination is uniform and quite rapid. It is usually complete in 10 days. Following germination, plants are fertilized with soluble 12-2-14-6Ca-3Mg at 75 ppm for 1 week.
Length of Establishment Phase:	2 weeks
Active Growth Phase:	Seedlings grow rapidly throughout the active growth phase. During the growing season, fertilization depends on weather. Soluble 20-9-20 NPK, 20-18-18 NPK, or 17-5-24 NPK at a rate of 100 ppm is applied weekly throughout the growing season.
Length of Active Growth Phase:	12 weeks
Hardening Phase:	No dry-down is done to induce dormancy. Seedlings are moved to an outdoor growing area in early to mid September.
Length of Hardening Phase:	2 weeks
Harvesting, Storage and Shipping:	Harvest Date: Mid to late October Storage Conditions: Seedlings are usually outplanted in fall. No storage except in outdoor growing area. Plants are well irrigated prior to shipping and shipped in containers.
Other Comments:	Wetland classification: FACU
References:	Dorena Genetic Resource Center Propagation Records, unpublished. Giblin D. nd. Osmorhiza berteroi Chilean sweet-cicely, mountain sweet-cicely. Seattle (WA): University of Washington, Burke Museum. URL: http://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Osmorhiza berteroi (accessed 20 Sep 2018). [NRCS] USDA Natural Resources Conservation Service. Osmorhiza berteroi DC. sweetcicely. URL: https://plants.usda.gov/core/profile?symbol=OSBE (accessed 20 Sep 2018).

Citation:

Riley, Lee E.; Klocke, Allison. 2018. Propagation protocol for production of Container (plug) Osmorhiza berteroi Plants 262 ml (16 in3) container; USDA FS - Dorena Genetic Resource Center Cottage Grove, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/02/25). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.