In spring, one of the most common questions is should I go out and spray. Obviously, calm conditions and suitable ground conditions are essential but the plant needs to be actively growing as well. As a rule, you will get better results using Atlantis and other post-ems in bright conditions rather than in dull overcast weather.
[youtube http://www.youtube.com/watch?v=AchkFpzhzNQ?list=PLCEo_lYvJv6GsSsWLSxhvQIpSgDQXUQKg&w=560&h=315]