I remember the first time I saw Cistus, or Rock Rose.  It was in a photograph in an herb book, and it was called  an "Old World" herb.  It was the most beautiful plant I'd ever seen up until then, and I was on a mission to find one for my own herb garden.  I looked long and hard, too, and I finally managed to find two:  a pink and a white one.  I cannot grow it here in the mountains of North Carolina, but that doesn't keep me from growing it for those of you who live in warmer climates.    Cistus incanus, a sub-shrub native to the dry hillsides and woodland margins of the Mediterranean region, grows from three to four feet high in sun/part sun.  The simple, yet exquisite, rose-like blooms have a wrinkled appearance, as do the leaves, which just adds to their charm.  I'm not positive about zones:  some sources say Zones 7-10, and others say Zones 8-11.