Cyperaceae (Carex)

Protocol Information for:

Label_title:
Carex (amplifolia)

Family Names:

Family Scientific Name:
Cyperaceae

Family Common Name:
Sedge

Scientific Names:

Genus:
Carex

Species:
amplifolia

Scientific Classification:

Scientific SubSpecies:

Species Authority:

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Authors:

Common Synonym:

Genus:

Species:

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Other Information:

Common Name:
Bigleaf sedge

Species Code:
CAAM10

Ecotype:
Willamette National Forest, Oregon

General Distribution:
Carex amplifolia is confined to temperate western North America, where it is usually uncommon or rare from coastal lowlands to middle elevations in the mountains

Known Invasiveness:

Propagation Goal:
Plants

Propagation Method:
Seed

Product Type:
Container (plug)

Stock Type:
107 ml (6.5 in3) container

Grow Time:
10 weeks

Target Specifications:
Stock Type: Container seedling. Well-developed crown and firm plug in container.

Propagation Collection:

Propagation Processing/Propagule Characteristics:

Pre-Planting Propagule Treatments:
Seeds are 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 30 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 very 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.

Length of Storage:

Guidelines for Outplanting / Performance on Typical Sites:

Other Comments:
Wetland classification: OBL

References:
Dorena Genetic Resource Center Propagation Records, unpublished. Flora of North America. nd. Carex amplifolia Boott. URL: http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242357036 (accessed 9 Oct 2018). [NRCS] USDA Natural Resources Conservation Service. Carex amplifolia Boott bigleaf sedge. URL: https://plants.usda.gov/core/profile?symbol= CAAM10 (accessed 9 Oct 2018). Painter E. 2016. Common (vernacular) names applied to California vascular plants. Berkeley (CA): University of California Berkeley, The Jepson Online Interchange California Floristics. URL: http://ucjeps.berkeley.edu/cgi-bin/get_painter_common.pl?17239 (accessed 9 Oct 2018).

Citation:
Riley, Lee E.; Klocke, Allison. 2018. Propagation protocol for production of Container (plug) Carex amplifolia 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 2025/05/19). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.

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