Slant appears in south at botanical gardens (4)
I believe the answer is:
skew
'slant' is the definition.
(I've seen this before)
'south at botanical gardens' is the wordplay.
'south' becomes 's' ('S' can be a synonym of 'south').
'at' is a charade indicator (letters next to each other).
'botanical gardens' becomes 'kew' (Kew Gardens in London. I am not sure about the 'botanical' bit.**).
's'+'kew'='SKEW'
'appears in' acts as a link.
Can you help me to learn more?
(Other definitions for skew that I've seen before include "Place(d) obliquely" , "Distorted, awry" , "Oblique; distort" , "(Make) oblique, slanting" , "Misrepresent" .)