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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

Scirpus (microcarpus)

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
Family Scientific Name: Cyperaceae
Family Common Name: Sedge
Scientific Name: Scirpus microcarpus
Common Name: Panicled bulrush
Species Code: SCMI2
Ecotype: Mt Hood, Siuslaw, Umpqua, Willamette National Forests, Oregon; Mt Baker-Snoqualmie National Forest, Washington
General Distribution: North America with the exception of the southeast
Propagation Goal: Plants
Propagation Method: Seed
ProductType: Container (plug)
Stock Type: 107 ml (6.5 in3) container
Time To Grow: 10 weeks
Target Specifications: Stock Type: Container seedling. Well-developed crown and firm plug in container.
Pre-Planting Treatments: Due to small seed size and short growing season, seeds are mixed with sand and sown directly into target containers. Growing medium used in these cells consists of 40:20:20:20 peat:composted fir bark:perlite:pumice with Nutricote controlled release fertilizer (18N:6P2O5:8K2O with minors; 140-d release rate at 21C) at the rate of 0.5 gram Nutricote per 107 ml container. Entire racks are sealed inside plastic bags and placed into refrigeration at 1 to 3 °C for 60 days. Cells are checked weekly and kept moist throughout the stratification period.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 Greenhouse growing facility.
Racks are removed from stratification facilities and placed directly into greenhouses in mid-July. No additional time-release fertilizer is added to medium. Cells are irrigated lightly several times per day to ensure seeds are kept quite moist throughout the germination period.
Establishment Phase: Germination is uniform and is usually complete in 1 to 2 weeks. Following germination, plants are fertilized with soluble 12-2-14-6Ca-3Mg at 100 ppm for 1 week.
Length of Establishment Phase: 2 weeks
Active Growth Phase: Plants grow quickly during the active growth phase Soluble fertilizer 20-9-20 NPK at 150 ppm is applied weekly for 8 weeks.
Length of Active Growth Phase: 8 weeks
Hardening Phase: No dry-down is done to induce dormancy. Seedlings are moved to an outdoor growing area in mid-September.
Length of Hardening Phase: 2 weeks
Harvesting, Storage and Shipping: Harvest Date: Mid-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: OBL
References: Dorena Genetic Resource Center Propagation Records, unpublished.

USDA Natural Resources Conservation Service. Scirpus microcarpus J. Presl & C. Presl panicled bullrush. URL: https://plants.usda.gov/core/profile?symbol=JUEF
(accessed 11 Oct 2018).

Citation:

Riley, Lee E.; Klocke, Allison. 2020. Propagation protocol for production of Container (plug) Scirpus microcarpus Plants 107 ml (6.5 in3) container; USDA FS - Dorena Genetic Resource Center Cottage Grove, Oregon. 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.