Jim from Keizer,oregon writes,
I am in Oregon with Green Perennial ryegrass. At what time of year do I start with my first application....
My personal lawn. Was hydroseeded and slowly has been invaded with crabgrass and other grassy weeds.
Timing will vary greatly from region to region. We recommend contacting your local cooperative extension office and speaking to the master gardener on staff as he/she will have the most accurate timing information available for your region.
Answer last updated on: 12/29/2012