The Blue Grasses
(Poa compressa L., P. pratensis L., and P. palustris L.
At least 3 perennial species of blue grass (Poa spp.) occur in blueberry fields. Blue grasses can be distinguished from other grasses by: their boat-shaped leaf tips  a panicle seed head  a spikelet of multiple florets that are often tinted purple, and have membranous ligules where the leaf blade meets the stem  Species can be highly variable. They emerge early in pruned fields forming dark green patches, and are important native and commercial forage species.