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Summary
Physical Characteristics
Carex kobomugi is a PERENNIAL growing to 0.2 m (0ft 8in).
See above for USDA hardiness. It is hardy to UK zone 6. The species is monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and is pollinated by Wind.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist or wet soil. The plant can tolerate maritime exposure.
UK Hardiness Map
US Hardiness Map
Synonyms
C. macrocephala. non Willd.
Habitats
Bog Garden; Cultivated Beds;
Edible Uses
Edible Parts: Root Seed
Edible Uses:
Root - cooked[172]. Seed[172]. An emergency food, used when all else fails[177]. The seed is very small and would be fiddly to use[K].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
None known
References More on Medicinal Uses
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Other Uses
Environmental Uses: Land reclamation; Landscape improvement; Soil conservation. Possible benefits in using C. kobomugi for dune stabilization in its native range, but there are considerable doubts raised about its relative effectiveness compared to native species outside of this range.
Special Uses
References More on Other Uses
Cultivation details
We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it should succeed outdoors in most parts of this country. It is likely to tolerate maritime exposure[K]. The following notes are based on the general needs of the genus. Easily grown in a damp to wet soil in full sun or shade[162, 200]. Members of this genus are rarely if ever troubled by browsing deer[233].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
The PFAF Bookshop
Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.
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Propagation
Seed - sow in situ in the spring in a moist soil in light shade. If seed is in short supply it can be sown in a cold frame and be planted out in the summer. The seed usually germinates in 2 - 6 weeks at 15°c[138]. Division in spring[200]. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the summer or following spring.
Other Names
If available other names are mentioned here
Japanese sedge; sea isle Japanese sedge; Asiatic sand sedge.
Chinese: shai cao.
Found In
Countries where the plant has been found are listed here if the information is available
Asia, China, Japan, Korea, Manchuria, North America, Russia, Taiwan, USA.
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
A harmful, exponentially spreading, robust, mat-forming, and dominant perennial invader [1d]. An introduced species to the US to stabilize dunes its distribution in the United States now extends from Rhode Island to North Carolina.[1d]. In Connecticut - Potentially invasive, banned. In Massachusetts - Prohibited
Conservation Status
IUCN Red List of Threatened Plants Status : This taxon has not yet been assessed.
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
Expert comment
Author
Ohwi.
Botanical References
58
Links / References
For a list of references used on this page please go here
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