Lumberjack, the circles are from the Tenacity. Not exactly sure which bit you're seeing, but some of the Nimblewill had started to go dormant before the application. That stuff was more yellow-gray-brown kind of stuff. I've never counted how many species of grass are growing in my yard, but their name is Legion for they are many. Always battling the Creeping Charlie, clover, dandelions, moles and stuff, but this Nimblewill may have been hitting20+% of the yard.