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The Forest Service National Center for Reforestation, Nurseries, and Genetic Resources (RNGR) is a leading source of technical information for nurseries and land managers regarding production and planting of trees and other native plants for reforestation, restoration, and conservation.

 
NPN Protocol Details Image

Schoenoplectus (tabernaemontani)

Alaska Plant Materials Center
Alaska Plant Materials Center
5310 S. Bodenburg Spur Rd.
Palmer, Alaska 99645
907-745-4469
907-746-1568 (fax)
Don.Ross@alaska.gov
http://www.plants.alaska.gov/
Family Scientific Name: Cyperaceae
Family Common Name: Sedge family
Scientific Name: Schoenoplectus tabernaemontani (K.C. Gmel.) Palla
Common Synonym: Scirpus validus Vahl
Common Name: Softstem Bulrush
Ecotype: Freshwater marsh near Knik Arm, Matanuska Valley, Alaska
General Distribution: Cosmopolitan. In Alaska, south of the central Brooks Range to northern Cook Inlet, then south and east to SE Alaska and the Yukon Territory.
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Time To Grow: 0
Target Specifications: Containerized plants with multiple leaves and well-developed roots ready for direct field transplanting.
Propagule Processing: Westrup LA-H breaks up seed heads and separates seed. Air separation cleans out the trash.Previously, seed was dried and stored frozen. Currently, seed is kept moist and refrigerated until sown.
Pre-Planting Treatments: Past treatments included Fall-sowing in flats with Cornell wetland mix. After saturation with water, they are exposed to winter temperatures until Spring when they are moved to the greenhouse. Germination was approximately 25% and spotty.
Presently, chilled moist seed is sown in flats on the surface of the medium. It is then overwintered as above for ~5 months. In Spring, they are moved to the greenhouse. This protocol will be updated when new results become available.
Hardening Phase: Flats with young plants are moved from the greenhouse to an outdoor sheltered area in late June. Successful outplantings have been done in late July and August.
Other Comments: Present experimentation involves two factors:
1) Keeping harvested seed moist until sown.
2) Sowing on the surface to allow exposure to light.
References: Hult‚n, Eric. 1968. Flora of Alaska and Neighboring Territories: A Manual of the Vascular Plants. Stanford University Press.

Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico. vol. 23. New York and Oxford.

Citation:

Moore, Nancy; Ross, Donald; VanZant, James. 2004. Propagation protocol for production of Container (plug) Schoenoplectus tabernaemontani (K.C. Gmel.) Palla plants Alaska Plant Materials Center Palmer, Alaska. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/02/23). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.