The best way to kill the existing lawn
and weeds is to apply a nonselective herbicide, such as glyphosate,
over the entire area. Glyphosate is a postemergence translocated
herbicide that effectively kills turf and grassy and broadleaf weeds.
Glyphosate is translocated rapidly in all actively growing plants.
Make applications when your turf is actively growing. Do not water
within 48 hours after treatment. Though the plants absorb the herbicide
rapidly, do not disturb for 7 days. It may take up to 7 days after
the application for the grass to completely absorb the material and
for symptoms to show. Depending on temperature, it can take up to
2 weeks for the entire lawn to die.
If you do not wish to use herbicides, you can dig out the existing
lawn and solarize the soil.
Alternatively you can lightly moisten the soil and rototill it.
You may need to till the soil several times to remove all of the
turf and weeds, raking up the debris in between tillings.
Next step to completely renovating your lawn
Remove the remaining turf
Photo by Suzanne Paisley
Be sure to follow the directions on the label and be careful not
to spray on a windy day or if rain is expected within 48 hours.