In west Michigan we have a lot of ryegrass--hydroseeded lawns. My customer is building a new house. I will not be putting in his new lawn. Most hydroseeders use a bluegrass /ryegrass mixture. I am trying to advise him on what cultivars of seed to ask for. I particularly want to advise him on what cultivars of ryegrass are resistant to red thread disease. We have a lot around here. Dollar spot and rust are a concern also. Does anybody have some good information on red thread resistant ryegrass? Thanks.