Poa subcaerulea is a perennial grass occurring in North America and Europe.

Newer, basal tufts of culms occur on separate prolonged stolons.

Its spikelets have short pedicels and are borne on the lower half of the branches, growing 4.5–6.5 mm (0.18–0.26 in) long.

It especially differs from Poa angustifolia by its production of single tillers on spreading rhizomes, and from variants of Poa pratensis by its short panicle, low number of spikelets, and a tendency towards two floral branches at the inflorescence's lowest node.

In North America, the grass occurs from Labrador down to Minnesota and eastward to New Brunswick and Nova Scotia.