Blue-Grass

Poa pratensis, or June gra . By far the best pasture gra grown in the U. S., naturalized from Europe in most parts, but also native in the n. portions. It reaches its best development on the rich limestone soils of Kentucky and the bottom lands of s. Ohio and Indiana, and thrives well in many portions of the prairie States. In nearly all parts of the n. U. S. it comes in spontaneously to the exclusion of other gra es on all soils that are fairly fertile. Another species, P. compre a, in N. Y. and New Eng., is of little value.