Weed-b-Gon will not kill grasses. You need a grass killer or a universal plant killer like RoundUp.

What kind of grass do you have? If you have Kentucky bluegrass it will continually become more dense. Fertilizer may help, and now is the time. Don't wait for more heat to come your way. If you have fescue or rye grass then it needs to be reseeded as it thins out. Reseeding is done in late summer to very early fall for best long term results.

Proper watering is very important. How often and for how long are you watering?

thanks dchall,

It's either straight KBG (it was sodded 2 years ago) or a KBG and tall fescue mix.

1" per week as needed.

Learning to recognize drought stress and I am going to put down 1" of water when needed.

Michigan State University recommends

Option 1: Management

Many folks have effectively “eliminated” quackgrass by masking its presence in the lawn. This is usually accomplished by increased nitrogen fertilization and increased mowing frequency. (Just what everyone wants, mowing more often!) This approach has been implemented with relative success by more than a handful of turf managers. The idea is that the quackgrass only has a competitive advantage when the desirable grass sits idly by. By increasing the vigor of your lawn you will choke the quackgrass, make it darker green and, for the most part, make it disappear.

This method could be accomplished by fertilizing your lawn with 0.25 to 0.5 pounds nitrogen per 1,000 square feet every two weeks during the growing season. If this ends up being one of those dry summers, you would definitely want to suspend this program because unless you’re irrigating, the turf will not be able to use the nitrogen. If you follow this program, you will notice that the quackgrass patches are much smaller next spring.

Could someone please check my math.

When using 29-0-3 lawn fertilizer

If I was to spread 0.5 pounds every two weeks would it be approximately 3.45 pounds of fertilizer for 2000 sq ft?

Thanks

What is the total weight of the fertilizer bag?

owlnsr

There is 15 pounds in a bag that covers 5,000 sq ft.

thanks