They just need a light trim over with a pair of scissors, usually, cutting off all spent flowers, etc. They're not one of my favourites - I've never yet known any to survive longer than a year and still look great.

I have had some for 5 years+ and I tend to trim by half every other year. They look less straggly then. :o)

I brought a Peach colour Patio Rose from my previous garden in 2001, planted it and it blooms every year ! Still a tiny Patio Rose, pretty though.