Easy
6D Changing the course o9) ? I ? A ? T ? N ?
Cryptic
1D People run amok keeping back gardeners aid (6) ? ? ? ? ? E
6D Sign of growth supporting island in the Bay of Naples (9) ? ? ? R ? ? ? R ?
7D Traveller off to Saturn, first away (9) ? ? ? ? ? N ? U ?
5A Chinese principle I go Through lacking right Irish leader (9) ?? ? I ? E ? ? ?
8A Experienced horse carries mode to university (6) ? ? ? ?? E
9A Threatened to enquire about shortened journey (2, 4) A ? , R ? ? ?
13A Last conclusion pure - not using head (6) E N D ? ? ?
15A Be economical in an awkward situation (6) ? ? ? A P E