I always give them a full lunar cycle. So ya...about a month. Depends on what kind of spell your working, some things unfold differently... if the request is complicated and there are many opposing forces working against you then it could take longer. Honey jars can take months even years, but then again some work quickly. I personally wouldn't waste longer than a month. If there is no movement in the following three weeks or signs etc... Then chances are you'll need to rework it and try something new.
Thanks everyone for input. As a result of the state of society, we all, of course, want instant results on anything. It was a love spell that was completed last week. It was done with the purest of intentions, and to a man who has feelings, but life got in the way. There is no one else, but his children in his life. I wanted to enhance his feelings so I could show I'm a helper, not a hinderer. Each morning and each evening, I send love energy his way. I will give it a couple more weeks and do it again if I don't see anything.