Ahh Nuts! Nutgrass 

Nutgrass, yellow nutsedge, c
an be one of the most troublesome weeds found in lawns.
Unlike most weeds, it's not controlled with applications of traditional grass or broadleaf herbicides. Uncle's SLEDGEHAMMER™ offers a new alternative for selective nutsedge control in
turf and around wood ornamentals in landscaped areas.
Use Uncle's SLEDGEHAMMER™ for post-emergence control of purple or yellow nutsedge found in established
turfgrass. Kentucky bluegrass, tall fescue, perennial
ryegrass and fine fescues are tolerant to this product when applied as directed.
When adding Gordon's SPREADER STICKER as recommended, SLEDGEHAMMER will be rainfast in 4
hours after spraying.