As a very inexperienced gardener, what is the best way to de-weed a lawn?
Having recently moved into a new house, the garden is generally in a very good condition- the previous owners were obviously keen gardeners, and have taken very good care of it. However, there are a few weeds starting to grow on the lawn- I guess when you know you're going to be moving out, there's less incentive to keep at it...
The garden in my previous house had obviously been neglected for years before I moved in, so although I did quite a lot of work on it during the time I was there, that was mainly getting rid of the brambles, nettles and other weeds that had been growing wild for years- there was no lawn, just a soil bed, a couple of bushes/ shrubs, and whatever else had taken root. So I generally just dug out all of the weeds and strimmed the overgrowth to try and get on top of it.
But given that the garden in my new place is in very good condition, how can I best 'stay on top of it', to keep it in this good condition, and not let it get overrun with weeds, etc?
I did spray the weeds I saw that were starting to grow up through the lawn with some 'Roundup path weedkiller' a couple of days ago- which was just what I'd bought to try and get on top of the garden in my previous house. In retrospect- perhaps this was the wrong thing to use on a lawn... although it has killed the weeds, it has also left dead patches of grass in the areas around where the weeds were growing.
So how can I best re-establish the lawn in the now dead patches where I have killed the weeds? Should I dig up the dead weeds, sprinkle new grass seed on those patches, or something else?
I did pop to a garden shop near me and pick up some Growmore, which is apparently general purpose fertiliser for all around the garden- should I just sprinkle that on these patches?