I have an extremely thick fine fescue lawn that looks great in spring and fall. I live in the Boston area. Unfortunately, my yard of 6k sq ft is in full sun. I’ve overseeded the last 5 years with newer varieties of fine fescue grass seed, But with the summer heat and sun my lawn obviously browns out on large portions of the lawn. I’ve been entertaining the idea of over seeding with just a high quality Kentucky bluegrass blend, is it unlikely that the Kentucky bluegrass can grow in harmony with a fully established to fine fescue for a balanced mix. I don’t mind if this takes multiple years, Or is it the best likelihood that I’ll end up with a fine fescue lawn with patches of Kentucky bluegrass?!?