Only about a third of the lawn seed and grass seed mixtures offered for sale for lawn seeding purposes last year in nine of the state's larger cities were suitable for establishing even-textured, fine-leaved lawns.
Roberts, Eliot C. and Everson, L. E.
"Lawn Seed or Grass Seed- Which Do You Buy?,"
Iowa Farm Science: Vol. 15
, Article 3.
Available at: http://lib.dr.iastate.edu/farmscience/vol15/iss9/3