Need to wait for 65 degree nights and 80 degree days for MSMA. If your grass is dormant, Roundup will not hurt it.
Don't just look at it from the top. Part it and make sure it hasn't started greening up at the base of the plant. You should
be ok the rest of this month but it has been unusually warm for this time of the year. It is going to work slower than
it would in the summer months. Watch the drift close to shrubbery and evergreen plants and small trees.