Shot into elm and up another tree (6)
I believe the answer is:
myrtle
'tree' is the definition.
(myrtle is a kind of tree)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for myrtle that I've seen before include "Try Mel for the flowering shrub" , "Shrub with purple-black oval berries" , "Termly (anag.)" , "Maybe miss" , "Evergreen shrub with dark purple berries" .)