The first of those was Whimble Gardens & Nursery at Kinnerton, near Presteigne which exceeded all expectations, it has everything, coffee and cake, a plant sales area, very carefully thought out garden rooms with beautifully thought out combinations of plants. There were so many good ideas and lovely arrangements, there's also a large meadow area, wildlife ponds and a viewing platform, with views of the Radnorshire Hills. The map of the place lists 20 different features.
I took more photos at this garden than any other one, I'll try and edit them to get the essence of the place.
Mucklestone Niursery, they are beautiful