Digitaria californica is a species of grass known by the common name Arizona cottontop.

[2] This perennial grass forms a clump of stems reaching up to a meter in height.

The inflorescence is a dense, narrow panicle containing pairs of woolly-haired spikelets.

[2][3] This plant grows in a number of habitat types, including desert scrub and shrublands, shrubsteppe, and savanna.

It tolerates varying precipitation amounts and survives easily in drought conditions, becoming dormant at times, then growing quickly when rain returns.