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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)
leriley@fs.fed.us
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 2024/07/22). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.