I've always pronounced "Ceanothus" as "Key-An-Oh-Thus", with the
emphasis on the "An". Is this correct, or am I completely wrong (does
it have a soft C for example).

My neighbour pronounces "Cotoneaster" as "Cott-On-Ee-Aster" (Emphasis
on the "Ee") whereas I have always thought of it as if it were the two
words "Cotton-Easter" - is he right and me wrong again? :-)

Bob