I have been gone to much this year and haven't seen any hummers yet. The lilies are just now starting to open with the heavy rainy weather we have been having so far. Normally though the hummingbirds and bees hanging off of the hollyhocks, lilies and nepeta look like they are having a drunken frat party. It would be difficult to know if they like the lilies more then other plants because I have so much variety planted to encourage them. Of the three plants listed I would say that the nepeta is the hands down winner throughout the season. They bloom for most of the season (I have multiple varieties) and are one of the first flowers to open, after initial bloom cutting back they bloom again until late summer. The hummers love them which is odd because they are various shades of blue for the most part. The main reason I use them so extensively though is because the deer hate them so I always plant them around the lilies or any other plant that the deer love.
