It’s about time for fall planting of cool season bluegrass and tall fescue grasses. 🌿🌰 Overseeding requires many steps, but one of the most important is choosing a quality seed. All grass seeds are not the same. If you don’t know what to look for, you may be introducing unwanted intruders into your lawn. You should be concerned with seed contaminated with orchard grass and/or rough bluegrass (Latin name, Poa trivialis, or Poa triv for short). Both are perennial grassy weeds that cannot be selectively controlled once they are established in a lawn. Buying quality seed starts by deciphering the seed label. One of the most important things to look for is listed as “% other crop.” Other crop refers to any species that is intentionally grown for some purpose. That would include turf-grasses other than the one you are buying. Unless a species constitutes 5% or more, the label doesn’t have to list the species. How much other crop is too much? It depends on what the other crop is,...