Yep, our bunnies take the erigeron down to nothing as soon as I plant it. We bought two five-gallon pots of blue-eyed grass a few weeks ago and they took one of those from 18 to 2 inches in nothing flat. It was blooming, too.
They seem to go for it right after I plant it, then when it grows back they leave it alone. Otherwise, they are not too bad and they do eat dandelions and some other weeds. I hate being at war with critters, so we tolerate them and focus all our anger on the squirrels!