Could be. See if you can find one of those old wire hanging baskets and upend it over the plant. The nepeta grows through it and soon conceals it and anything feline eating the shoots can't do any real damage. Works for me.

Oh what a good idea Steragram. Many thanks. :-))

Works a treat! I thought I had lost mine until I noticed one of my cats spending too much time sitting where it was planted. It's now covered so he can't get to the Crown and damage it.

There you are Pdb - a seconder!