Where are the Monarchs?

They're obviously not in my garden or the milkweed plant wouldn't be so lush and leafy.

I wonder what's going on. I only have two or three plants in this one location since I work diligently at pulling the tiny seedlings that would usurp my whole garden if I didn't. Could the Monarchs be offended by this practice? I don't use insecticides of any kind. Is anyone else missing them?