Carex (haydeniana)

Tara Luna USDI NPS - Glacier National Park West Glacier, Montana 59936 (406) 888-7835 http://plant-materials.nrcs.usda.gov/azpmc

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Family Scientific Name:	Cyperaceae
Family Common Name:	Sedge family
Scientific Name:	Carex haydeniana Olney.
Common Name:	Hayden's sedge
Species Code:	CARHAY
Ecotype:	Disturbed subalpine meadows, Logan Pass, 2200m elev.
General Distribution:	C. haydeniana is a western North American species, mostly east of the Cascades, occurring near to above tree line, in wet to moderately dry habitats.
Propagation Goal:	plants
Propagation Method:	seed
ProductType:	Container (plug)
Stock Type:	116 ml conetainers
Time To Grow:	8 Months
Target Specifications:	Stock Type: Container seedling<br> Height: 15 cm<br> Caliper: n/a<br> Root System: Firm plug in 116 ml conetainers.
Propagule Collection:	Collect mature inflorescences in late August and early September when perigynia and scales turn dark brown. Scissors are used for cuttings mature tops. Seed is stored in paper bags in drying shed prior to cleaning.
Propagule Processing:	Air blower,thresher and screens are used for cleaning. Seed longevity is at least 4 years at 3 to 5C in sealed containers. Seed dormancy is classified as physiological dormancy. Seeds/Kg: 2,684,946/kg % Purity:100% % Germination: 75 to 90%
Pre-Planting Treatments:	5 month outdoor cold-moist stratification. Fill rates may be highly variable.
Growing Area Preparation/ Annual Practices for Perennial Crops:	Outdoor nursery growing facility. Sowing Method: Direct Seeding. Seeds are surface sown;needs light for germination. Growing medium used is 6:1:1 milled spaghnum peat, perlite, and vermiculite with Osmocote controlled release fertilizer (13N:13P2O5:13K2O; 8 to 9 month release rate at 21C) and Micromax fertilizer (12%S,0 .1%B, 0.5%Cu, 12%Fe, 2.5%Mn, 0.05%Mo, 1%Zn) at the rate of 1 gram of Osmocote and 0.20 gram of Micromax per 172 ml conetainer. Conetainers are filled and sown in late fall and irrigated thoroughly prior to winter stratification. Seeds germinate under fluctuating temperatures in spring after snow melt and are irrigated with an overhead irrigation system.
Establishment Phase:	Media is kept moist during germination. Shoot and root development occur rapidly occur rapidly following germination.
Length of Establishment Phase:	4 weeks
Active Growth Phase:	This high elevation species is adapted to very rapid growth and development. Additional fertilization was not required for plants to attain root-tightness in 5 weeks. Plants held over in the nursery the second year were flowering 4 weeks after snowmelt.
Length of Active Growth Phase:	5 weeks
Hardening Phase:	Plants are fertilized with 10-20-20 liquid NPK at 200 ppm during August and September. Irrigation is gradually reduced in September and October. Plants were given one final irrigation prior to winterization.
Length of Hardening Phase:	4 weeks
Harvesting, Storage and Shipping:	Total Time to Harvest: 8 months Harvest Date:July Storage Conditions: Overwinter in outdoor nursery under insulating foam cover and snow.
Length of Storage:	5 months
Other Comments:	C. haydeniana grows very rapidly under nursery conditions and produces a large root mass in a few weeks. It frequently colonizes disturbed sites at high elevations in wet to xeric sites.
References:	Flora of the Pacific Northwest, Hitchcock and Cronquist, Univ. of Washington Press,7th printing, 1985. Growing Colorado Plants from Seed, A State of the Art, Vol. 2, USDA Forest Service General Technical Report INT-103, Jan.1981. Glacier Park Native Plant Nursery Propagation Records, unpublished. Native and Introduced Species Statistics, National Park Service, Denver Service Center, Hassell, Wendel, April 1996. The Sedge Family of British Columbia, Taylor,T.M.C., B.C. Provincial Museum, Handbook #43, 1983. 1999 Revegetation Monitoring Report, Glacier National Park, Asebrook, J. and Brenneman, B., unpublished.

Citation:

Luna, Tara; Corey, Susan; Evans, Jeff; Wick, Dale; Hosokawa, Joy. 2004. Propagation protocol for production of Container (plug) Carex haydeniana Olney. plants 116 ml conetainers; USDI NPS - Glacier National Park West Glacier, Montana. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/01). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.