In the garden, each end has a border! (5)
I believe the answer is:
hedge
'in the garden' is the definition.
I can't judge whether this definition defines the answer.
'each end has a border' is the wordplay.
'end' says to take the final letters.
'has' says to put letters next to each other.
'a border' becomes 'edge' (synonyms).
The final letter of 'each' is 'h'.
'h'+'edge'='HEDGE'
Can you help me to learn more?
(Other definitions for hedge that I've seen before include "Be cautious" , "appear non-committal in statement" , "Fence formed by bushes" , "Row of bushes" , "bush as a > barrier" .)