249-Weeds 9

Fact Sheet No. 249, UMaine Extension No. 2202

Prepared by David E. Yarborough and Phoebe Nylund, The University of Maine, Orono, ME 04469.  Replaces March 1989 by Tom DeGomez, David Yarborough and Christopher Campbell. Revised February 2003.

Pointed Broom Sedge, Carex scoparia

  • Life cycle: Perennial sedge. Reproduces by rootstocks and seed. Flowers from July to September.
  • Description: Grass-like sedge. Stems 1/2′ to 2 1/2′ tall and triangular. Leaves less than 1/8′ wide. Three to ten flower spikes, oblong, narrow at both ends, brownish or straw colored, 1/4″ to 3/4″ long, 1/8″ to 1/4″ in diameter with many flowers.

Three-square Sedge, Scirpus americanus

  • Life cycle: Perennial sedge. Reproduces by rootstocks and seed. Flowers from June to September.
  • Description: stems are sharply triangular and 1′ to 4′ tall. One to 3 leaves narrow, tapering to tip and shorter than the stem. Flowers 1/4″ to 1″ long and egg-shaped, in clusters of 1 to 7. A single, 1 1/2″ to 4″ long slender leaf at the base of the flower cluster.
Three-Square Sedge
Figure 3: Three-Square Sedge

Quack-grass, Agropyron repens

  • Life cycle: Perennial grass. Reproduces by seed and running rootstock. Flowers from July to September.
  • Description: stems 1′ to 4′ tall with sheaths usually shorter than internodes. Leaf blades are 3″ to 12″ long and 1/8″ to 3/8″ wide, smooth beneath and rough above. Ligule very short.
Figure 4: Quack-grass

Little Bluestem or Bunch Grass, Schizachyrium scoparius or Andropogon scoparius

Life cycle: Perennial grass. Reproduces by seed. Flowers from August to October.

Description: Stems 1 1/2′ to 4 1/2′ tall with smooth sheaths. Leaf blades are 6″ to 1 1/2′ long and 1/8″ to 1/4″ wide. Seed heads 1″ to 2 1/2″ long, loose, with spreading hairs. Awn is 1/4″ to 1/2″ long, spiral, bent and rough.

Wild Oat-grass, Danthonia spicata

  • Life cycle: Perennial grass. Reproduces by seed. Flowers from July to September.
  • Description: Stems 1′ to 2 1/2′ tall and smooth. Sheathes shorter than the internodes. Leaf blades are rough, 5″ to 8″ long and 1/8″ wide or less. Ligules are very short. Seed heads are 1″ to 2″ long. The bent, spreading awn closely twisted at the base.

Information in this publication is provided purely for educational purposes. No responsibility is assumed for any problems associated with the use of products or services mentioned. No endorsement of products or companies is intended, nor is criticism of unnamed products or companies implied.

© 1989, 2003

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