Quaking Grass

Briza media ( Quaking Grass )
Forms a moderate growing, clump of deep green foliage up to 1 foot high. It is evergreen in mild climates. The puffy, oat-like, flower plumes reach up to 2.5 feet in height.
Hardy zones 4 to 8 in full sun on well drained soil. Drought tolerant. Can be divided during early spring or autumn.

Buchloe dactyloides ( Buffalo Grass )
A low perennial lawn grass that reaches a maximum height of 6 ( rarely over 4 ) inches uncut, that is native to the Great Plains from Canada to Texas.
The foliage is gray-green from late spring through mid autumn, turning beige for the remainder of the year. It is a warm season grass.
Hardy zones 3 to 9 in full sun, it is tolerant of heat and drought ( overwatering and fertilizeing can actually cause disease and insect problems ).