Introduced a rowan to hide another tree (5)
I believe the answer is:
cedar
'another tree' is the definition.
'cedar' can be an answer for 'tree' (cedar tree is a kind of tree). I am not sure about the 'another' bit.
'introduced a rowan to hide' is the wordplay.
'to hide' says the answer is hidden in the clue.
'CEDAR' is hidden in the letters of 'introduced a rowan'.
Can you help me to learn more?
(Other definitions for cedar that I've seen before include "Evergreen tree" , "representative of Lebanon?" , "Deodar" , "Tree (Lebanese?)" , "may have needles?" .)