Wind Cave National Park - Grasses Short (U.S. National Park Service)

Grass Characteristics
(A) Annual	A plant that does not live more than 1 year.
(P)Perennial	A plant that can live for more than 2 years.
(W) Warm Season	A plant that grows in spring and summer, flowers in summer or fall.
(C) Cool Season	A plant that grows and flowers in spring and early summer, grows slowly or becomes dormant during the hot part of the summer, and may resume growth in the fall as the weather cools.
(S) Sod Grass	A grass that forms sod by means of rhizomes or stolons.
(B) Bunch Grass	A grass that takes on the characteristic shape of a bunch or tuft.
(N) Native	Grass that was part of the original vegetation of the area.
(I) Introduced	Grass not native to North America, intentionally or unintentionally brought in by humans.

Short Grasses Less than 1 foot tall(Average heights; individual plant size may vary with growing conditions.)	A	P	W	C	S	B	N	I
Aristida longiseta Red threeawn (Aug-Sep)		*	*			*	*
Bouteloua gracilis Blue grama (Jul-Aug)		*	*		*		*
Bouteloua hirsuta Hairy grama (Jul-Aug)		*	*		*		*
Bromus japonicus Japanese brome (Jun-Aug)	*			*				*
Bromus tectorum Cheatgrass (May-Jun)	*				*			*
Buchloe dactyloides Buffalo grass (Jun-Jul)		*	*		*		*
Eragrostis cilianensis Stinkgrass (Jul-Aug)	*		*					*
Festuca octoflora Sixweeks fescue (May-Jun)	*			*				*
Hordeum pusillum Little barley (May-Jun)	*			*			*
Muhlenbergia cuspidata Plains muhly (Jul-Aug)		*	*			*	*
Poa arida Plains bluegrass (Apr-Jun)		*		*		*	*
Poa sandbergii Sandberg's bluegrass (Apr-Jun)		*	*			*	*