Tree from the Spanish arboretum, at the far end (3)
I believe the answer is:
elm
'tree' is the definition.
(elm is a kind of tree)
'spanish arboretum at the far end' is the wordplay.
'spanish arboretum' becomes 'lm' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'far end' suggests the final letters (the letter at the far end of the word).
The final letter of 'the' is 'e'.
'lm' after 'e' is 'ELM'.
'from the' is the link.
Can you help me to learn more?
(Other definitions for elm that I've seen before include "Tall shade tree" , "Hard wood" , "Large tree" , "Source of wood" , "I branch out" .)