Bought a house last year...previous owner pretty much neglected the yard. Basically what I have is spots of grass and spots of weeds, etc. Will fertilizing the yard help? What fertilizer do I use? Looking around there are a ton of different fertilizers out there. I think I need some kind of weed & feed but the Scott's stuff is about $47 a bag, and I have a 1 acre yard so there's close to $150. Is there something else just as good I can use? Also, do I fertilize first or spray weed killer first? I have some 2-4-D i heard was pretty good.