Master Gardener: How to remove the yellow nutsedge weed from your lawn

Q: I have tried several products to remove this weed from my lawn, but nothing has worked. In fact it seems to be spreading. Any other suggestions?
A: From your photo, it appears that you have an infestation of yellow nutsedge (Cyperus esculentus). This is a particularly noxious weed that frequently appears in lawns. Their leaves are very stiff, light green, and have an upright growth habit, making them an unattractive addition to your landscape. It grows from underground rhizomes (roo