Forage and lawn seeds are a little bit different. Forage in particular is actually an area where national registration is working quite well. The reason it is working well is that there haven't been the resources to have recommending committees in some areas. If it's registered in a province where there is an active recommending committee, then it's available nationally simply because there isn't a recommendation committee in other areas to change it.
On February 24th, 2015. See this statement in context.