Native Wonder - Native Grass Mixture

I first bought the native wonder mix last year, and was successful in getting it established in a few areas, about 200-300 square feet. The areas where it failed were my own fault, having to do with less than ideal preparation, I am new at this. The seeds themselves were great. They germinated very fast once the soil was warm, within three days. I had the best success in flat areas and when I would stomp the seeds into the soil very tightly. Weeds are a major pain, but so far have had success with Ortho Weed B Gone plus crabgrass applied AFTER the lawn is well established. I suppose it might be early to make that claim, lets just say I have not seen detrimental results yet, about 6 weeks after applying the weed killer.