The amount of sun a rhododendron can take depends on temperature. If the
temperature is cool, say 70F or less, almost all rhodos can take full sun
without suffering. On the other hand, very few rhodos can handle a long
summer of 90F days in full sun. Since this temperature stuff is dependent
on climate zone, you need to specify a climate zone in order to get an
answer to your question.

I have not grown R. 'Kluis sensation', but a similiar hybrid R. 'Jean
Marie de Montague' does not do well in full sun here in zone 6B.

--beeky

griffon wrote:

Usually things like this can be learned through web searches or one of
my many gardening books, but I keep finding conflicting opinions on
how much sun tolerence this Rhodondron (sp?) can take. Does anyone
have personal experience with this plant? I have found sites that
claim it will burn badly in all but deep shade and I have found sites
that suggest it can take full sun even in the upper south. Any help
will be greatly appreciated.