I love a cool green weed free lawn. It's a refreshing sight on a warm spring night. Unfortunately we don't get these turf quality lawns easily, and weeding is a major pain. Here in Sacramento, weeds like crabgrass, spurge and bent grass overtake neighborhood lawns very quickly.
I was getting totally frustrated with trying to both feed my lawn to help it maintain its deep green color and get rid of the ever present weed problem. Two years ago, while in Emigh, I asked the nurseryman for advice on how best to deal with both problems. After discussing the pro's and cons of the products available, I settled on Scott's Weed N Feed Turf Builder 2x2. Though taken aback by the hefty price, I was reassured by the 100% guarantee that came with it.
My nursery guy recommended I mow my lawn and water it thoroughly the day before application. Which I did. The following morning I applied the Weed N Feed according to the directions, using my spreader. One warning: Do NOT use this product without a spreader. Hand casting will result in burning and scarring of your lawns.
Within one week, I was starting to see a much deeper richer color and a noticeable reduction in weeds. WOW! Since this was very early Spring, 5 weeks later, I reapplied Weed N feed a second time. The results were simply amazing. I went from a paler weedier lawn to a golf course quality weed free area. I can honestly recommend this product because it works just exactly as it says it will.
Now I routinely do my Weed N Feed in early Spring to get my lawn ready for summers heat. A 20 pound bag should last you through at least two Springs, if you have the average suburban lawn. You need to apply it as soon as temperatures rise above 49 degrees at night, and before daytime temps reach the high 70's for it to be truly effective.