I would cut it back severely and then keep it watered so it can regrow and look attractive before it gets cold. It roots as easily as coleus, so you might want to make a few cuttings just in case it decides to take offense and die on you. For me, nine times out of ten it regrows, but that tenth time, it never comes back, especially if it is a very old plant and is very overgrown.

Thanks for the advice. Once more into the breach (with my shears)!

I used my shovel. :)

Help!!! Is it okay to prune powis castle's at the end of fall, beginning of winter? I cut off all my dead leaves, but now it seems to be going grey and brittle all around, since I brought mine indoors for the winter. (I live in Long Island, NY, and have my powis castle in a pot all year round, so I had it out for the summer, but now it's getting cold and I didn't want it to get hurt, so I brought it indoors and next to a window that can give it plenty of sunlight, but it still looks like it drying up slowly and dying, or is that normal and I should be pruning it down? Thank you for any help!!

talf, this plant is rated for zones 4-9, so it should be able to overwinter on Long Island outside. Probably not in a pot, but in the ground.