Applications of Curtail M are rainfast within 6 hours after application. Generally, application rates at the lower end of the recommended rate range will be satisfactory for young, succulent growth of susceptible weed species.
Can I use Curtail M on my lawn?
It is still available and yes it does kill fast but not perennial weeds. it just burns of the leaves fast so will kill an annual fast but the root of a perennial will regrow. Curtail M is another great one. Remember guys with some products used on lawns you can't compost the grass clippings and put them in flower beds!
When's the most effective time to apply an herbicide?
Systemic herbicides work best when applied late morning, midday and in the afternoon in cool or cold climates. Plant growth slows down at dusk and speeds up again as the sun rises the following day. Heavy early morning dew can cause herbicides to run off, so it's best apply them after dew has evaporated.