Squashes monarch, after foot scrubbed, into shoes (8)
I believe the answer is:
pumpkins
'squashes' is the definition.
(pumpkin is a kind of squash)
'monarch after foot scrubbed into shoes' is the wordplay.
'monarch' becomes 'k'.
'after foot scrubbed' becomes 'in' (I am not sure about this - if you are sure you should believe this answer much more).
'into' means one lot of letters goes inside another.
'shoes' becomes 'pumps' (pump is a kind of shoe).
'k'+'in'='kin'
'kin' inserted within 'pumps' is 'PUMPKINS'.
Can you help me to learn more?
(Other definitions for pumpkins that I've seen before include "Examples of squash" , "Large pulpy orange fruits" , "Squashes" .)