What a name! Named after the German town of Weihenstephan but the plant's full name is actually Sedum kamtschaticum var. floriferum 'Weihenstephaner Gold'. Phew! No wonder some people prefer common names to proper botanical names.
However, name aside, it's a really good Sedum for the garden. It covers the ground neatly with attractive foliage, turning red and gold in autumn and the plant overwinters as a mat of red stems. The large heads of golden flowers - starting in early summer - are attractive to bees.
This is very much a 'plant me anywhere' plant and it will survive in those awkward, difficult sites, but give it a well-drained, not too rich soil and full sunshine to see it at its best. About 12cm (5") or so when flowering.