Keith Corwell wrote:
I did some new seeding the first part of July. The grass is up nice and I
did mow it once. When could I spray some weed killer ?


I wouldn't worry about weeds if I were you. They'll be dying off soon
anyway. In October, you'll probably want to seed your entire lawn and
get it ready for the fall / winter. Start in the spring with a good
regiment and your lawn should thrive next year. You won't have as many
weed to worry about.