These websites has a good list of weeds, sledges, grassy weeds with pictures that help ID them.
Weeds in Turf
Virginia Tech Weed ID Tool
Purdue website has thesehttps://turf.purdue.edu/homeowner-resources/)
Control of Broadleaf Weeds in Homelawns (AY-9-W)
Control of Crabgrass in Homelawns (AY-10-W)
Identification and Control of Perennial Grassy Weeds (AY-11-W)
Yellow Nutsedge Control (AY-19-W)
ID and Control of Annual Bluegrass and Rough Bluegrass in Lawns (AY-41-W)
More weed list from Purdue- https://turf.purdue.edu/category/weed-of-the-month/
Some hard to ID ones:
Orchardgrass - http://purdueturftips.blogspot.com/2015/06/weed-of-month-for-may-2015-is.html
Quackgrass - http://purdueturftips.blogspot.com/2015/06/weed-of-month-for-june-2015-is.html
Check the Cool Season guide for Weed treatment options. In cool season, start with a 3-way (eg. Weed b Gon), then move to triclopyr (Weed b Gon CCO), lastly the rest most likely needs round up. A few hardones can be controlled with tenacity (bentgrass, nimble,).
Weeds in Turf
Virginia Tech Weed ID Tool
Purdue website has thesehttps://turf.purdue.edu/homeowner-resources/)
Control of Broadleaf Weeds in Homelawns (AY-9-W)
Control of Crabgrass in Homelawns (AY-10-W)
Identification and Control of Perennial Grassy Weeds (AY-11-W)
Yellow Nutsedge Control (AY-19-W)
ID and Control of Annual Bluegrass and Rough Bluegrass in Lawns (AY-41-W)
More weed list from Purdue- https://turf.purdue.edu/category/weed-of-the-month/
Some hard to ID ones:
Orchardgrass - http://purdueturftips.blogspot.com/2015/06/weed-of-month-for-may-2015-is.html
Quackgrass - http://purdueturftips.blogspot.com/2015/06/weed-of-month-for-june-2015-is.html
Check the Cool Season guide for Weed treatment options. In cool season, start with a 3-way (eg. Weed b Gon), then move to triclopyr (Weed b Gon CCO), lastly the rest most likely needs round up. A few hardones can be controlled with tenacity (bentgrass, nimble,).