2nd growth grass has some benafical use.I personally dont bother with second growth grass.I do give 2nd growth flats to my sisters doves.They just love the stuff!I grow inside and outside using 11/21 flats.The 2nd gowth tastes far worse than the first.I am able to grow enough grass to consume 12ozs. a day.And can eaily gear up production for far more.It is more work to do all first cut grass,but well worth it!Have you tried barley?May you be blessed with vibrant health and vitality!!