Go for it!

Now is actually one of the best times to plant perennials/shrubs/trees...plus you can usually find great sales on these plants that are often getting ready to go dormant. Places like Home Depot/Lowes commonly mark down in October to make room for Christmas merchandise.

The plants are not focusing on foliage expansion at this time of year, but will continue root growth until the ground freezes...

They will have a great spring if you plant them during the next month.

One thing, though....don't count on the rain to deliver enough water at first...water deeply two-three times a week for a month.

Hope that helps and enjoy your new patio!

I'll second that! This is a great time to put in new plants, divide perennials, & move stuff around.

OK, now if it would just STOP raining, I could actually get some gardening done . . .