Hi All Newbie here. I moved in to a new build house last year and planted the lawn out in September. Now in May after a couple of cuts and a feed of 4 in 1 fertiliser - can’t remember the brand it has started growing with very coarse thick grass weeds - excuse my complete lack of knowledge. I have attached a photo of them - my question is what are these weeds and what is the best way to get rid of them - there are hundreds of them as it is a large garden so digging is not an option. Thanks for any advice.