I'm editing this post to help it make sense after being split off from the "Welcome to" thread. Some of the responses to my original question got left out, but I found some other information on propagating Osteospermum that I'll post here.
This was my original question:
Does anyone know the best time to take cuttings off osteospermum? I have one blooming indoors on my back porch and I keep meaning to try to root some cuttings from it.