Penstemon going crazy

Hi all

I have planted an acid blue and a glorious acid pink Penstemon too close to the front border eeeek!

Now i know these can be tricky, so any idea's as to when and if i can re-site them?

I await with baited breath :D

Paula x

 

Only today I took cuttings(easy peasy) of mine because I need to clear apatch for veg!!!and if moving the plant is not successful then I have back up
I am going to wait until the plant has finished flowering before moving it,but while still in the green. I'm sure someone will jump in tell us times and methods:D but I have to do the deed quite soon