People do, I don't. I'm not much into perennials. Too impatient (hmmm...didn't I just tell you in a c-mail to be patient
). And also since I don't have a lot of space, I like to be able to change things up every year. Perennials mean less work, but then that parcel of garden real estate is committed...
Thanks for the tip re: zinnias guzzling. I didn't know that.