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Plant Guide

Digitaria cognata (J.A. Schultes) Pilger
fall witchgrass

 

Kingdom  Plantae -- Plants

Subkingdom  Tracheobionta -- Vascular plants

Superdivision  Spermatophyta -- Seed plants

Division  Magnoliophyta -- Flowering plants

Class  Liliopsida -- Monocotyledons

Subclass  Commelinidae

Order  Cyperales

Family  Poaceae -- Grass family

Genus  Digitaria Haller -- crabgrass P

Species  Digitaria cognata (J.A. Schultes) Pilger -- fall witchgrass P

 

Alternate Names

fall witchgrass, Leptoloma cognatum

 

Uses

Carolina crabgrass is grazed by all domestic livestock and by deer and antelope.  Upland game birds eat the seed.

 

Status

Please consult the PLANTS Web site and your State Department of Natural Resources for this plant’s current status, such as, state noxious status and wetland indicator values.

 

Description

Grass Family (Poaceae).  Carolina crabgrass is a native, warm‑season, short‑lived, perennial bunch grass.  The height ranges from 1 to 2 feet.  The leaf blade is narrow, generally less than 4 inches long, one side wavy, and the other smooth.  The leaf sheath is rounded and shorter than the internodes.  The stem is knotty and hairy at the base.  The seedhead has an open purplish panicle one‑third to one‑half as tall as the plant.  The panicle branches are hairy in the axils and the spikelets are 1‑flowered and solitary at the end of a long pedicel.

 

Distribution: For current distribution, please consult the Plant Profile page for this species on the PLANTS Web site.

 

Management

Proper use and management of associated grasses maintains this grass in the plant community.

 

Establishment

Carolina crabgrass growth starts in the spring.  The seedheads are produced a month later with the foliage remaining green for 2 to 3 weeks longer.  When climate is favorable, it makes some fall growth.  Seed remain on the plant until winter.  This plant is shallow rooted.  Individual plants are usually widely scattered in any plant community.  It grows best on sandy loams with heavier subsoil.

 

Cultivars, Improved and Selected Materials (and area of origin)

Please contact your local NRCS Field Office.

 

Reference

Leithead, H.L., L.L. Yarlett, & T.N. Shiflett. 1976. 100 native forage grasses in 11 southern states. USDA SCS Agriculture Handbook No. 389, Washington, DC.

 

Prepared By & Species Coordinator:

Percy Magee, USDA NRCS National Plant Data Center, Baton Rouge, Louisiana

 

Edited: 13may02 ahv; jul03 ahv; 20sep05 jsp; 070116jsp

 

For more information about this and other plants, please contact your local NRCS field office or Conservation District, and visit the PLANTS Web site<https://plants.usda.gov> or the Plant Materials Program Web site <https://Plant-Materials.nrcs.usda.gov>


 

 

 

Attribution:  U.S. Department of Agriculture 

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