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Big Leaf Sedge
Carex amplifolia
About Big Leaf Sedge (Carex amplifolia) 2 Nurseries Carry This Plant Carex amplifolia is a species of sedge known by the common name bigleaf sedge. It is native to western North America from British Columbia to Montana to California, where it grows in wet and seasonally wet areas in coniferous forests. This rhizomatous sedge produces stems 50 to 100 centimeters tall. The winged stems have reddish tinted bases and are wrapped in long, roughly hairy leaves up to 2 centimeters wide. The flower cluster is made up of 5 to 8 cylindrical spikes each up to 10 or 14 centimeters long and often made up of hundreds of individual flowers.
Plant Description
Plant Type
Plant Type

1.6 - 3.3 ft tall

Flower Color
Flower Color

Wildlife Supported

Landscaping Information


Ease of Care
Ease of Care
Moderately Easy

Sunset Zones
Sunset Zones?
1, 2, 3, 4*, 5*, 6*, 7, 8, 9, 14*, 15*, 16*, 17*, 18, 19, 20, 21, 22, 23, 24

Natural Setting
Site Type
Site Type
Wet places

Annual Precipitation: 13.1" - 151.6", Summer Precipitation: 0.28" - 5.67", Coldest Month: 30.5" - 52.0", Hottest Month: 55.1" - 79.3", Humidity: 0.58" - 23.38", Elevation: 29" - 7240"

Alternative Names
Common Names: Ample-leaved Sedge, Big-leaf Sedge, Bigleaf Sedge

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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