Marie, if you add information on location you will get much more helpful responses. What's perennial in TX is really different from what's a shade perennial here.

Here are directions to adding it to your profile so it always shows up when you post in GW.

Go to Your Houzz in upper right of every page, click Edit Profile, and on the left side click advanced settings. Well down the advanced settings page is a blank labeled Climate Zone for Garden Forums along with a link to find your zone.

If you add info on your state or the nearest large city you will get even better information since zone only relates to average coldest winter temperatures.

Then return to the top of the page and click Done Editing.