I was in a friend's garden (in the Pacific Northwest), she has two plants with no id. The first is a shrub, it is about 6 feet tall and reminds me of a rock rose. The second is a ground cover. Any ideas?
That is what I thought too - the leaves (none of the other Lavatera I saw have this leaf shape); there are several named cv's for L. x clementii one of which is likely to be your plant. Thanks Michael for pointing in the right direction.