Carex (hoodii)

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 hoodii Boott.
Common Name:	Hood's sedge
Species Code:	CARHOO
Ecotype:	Subalpine meadows, Granite Park, 2200 elevation.
General Distribution:	C. hoodii is a western North American species, mostly east of the Cascades, occurring near to above treeline, in wet to moderately dry habitats.
Propagation Goal:	plants
Propagation Method:	seed
ProductType:	Container (plug)
Stock Type:	490 ml containers
Time To Grow:	9 Months
Target Specifications:	Stock Type: Container seedling<br> Height: 15 cm<br> Caliper: n/a<br> Root System: firm plug in 490 ml (4.5 inch) pots.
Propagule Collection:	Hand collect in early September when perigynia and scales turn dark brown. Mature inflorescences are cut with scissors and kept in paper bags in drying shed prior to cleaning.
Propagule Processing:	An air blower cleaner and thresher are used for cleaning. Seeds are stored at 3 to 5C in sealed containers.Seed longevity is unknown. Seed dormancy is classified as physiological dormancy. Seeds/Kg:2,684,946/kg % Purity:100% % Germination:40%
Pre-Planting Treatments:	5 month outdoor cold-moist stratification.
Growing Area Preparation/ Annual Practices for Perennial Crops:	Outdoor Nursery. 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.
Establishment Phase:	Medium is kept slightly moist during germination. Seeds are subjected to diurnal temperatures of 13 to 21C during the day and O to 5C at night during germination. Shoot and root development 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:	8 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: 9 months Harvest Date: July Storage Conditions: Overwinter in outdoor nursery under insulating foam cover and snow.
Length of Storage:	5 months
Other Comments:	Vegetative Propagation Method: Divisions of mature nursery stock could be done.
References:	Flora of the Pacific Northwest, Hitchcock and Cronquist, Univ. of Washington Press, 7th printing, 1990. 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. Seeds: Ecology, Biogeography and Evolution of Dormancy and Germination, Baskin and Baskin, Academic Press, 1998.

Citation:

Cox, Robin; Evans, Jeff; Wick, Dale; Hosokawa, Joy. 2001. Propagation protocol for production of Container (plug) Carex hoodii Boott. plants 490 ml containers; USDI NPS - Glacier National Park West Glacier, Montana. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/24). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.