I got Prospero as a "twig" 2 years ago and I will need to pot it in the next bigger size. (It's in a 2-3 ft size.) Now I will need a 3-4 ft one! Beautiful blossoms, quite fragrant, happy with my partly shaded porch that gets south west sun. Heartily recommend this one! I am in a zone 4/5/6 depending on the area in my yard...
I grew Prospero in a 15" pot from a tiny twig. It's a short, tidy bush, and when put in a patio pot, it's up off the ground, and easier to apreciate it's beauty and smell it's divine perfume. It produces exquisite rosettes. The deep red color fades to purple with age. It looks like a flower from a Persian miniature. It's old fashioned, and very romantic.
Prospero is my favorite rose. It is very fragrant, repeat blooming and is disease resistant. I have dug this rose up and it has traveled with me from place to place. Prospero survived being in a wine barrel only getting 2-3 hours of sun a day for 5 years before it finally got rust. I then planted it in the ground. The color is intense, sometimes almost purple. For me a must have.