Plant contents of husk under patch of ground (5)
I believe the answer is:
lotus
'plant' is the definition.
(lotus is a kind of plant)
'contents of husk under patch of ground' is the wordplay.
'contents of' says to take the centre (I've seen 'content of' mean this).
'under' is a charade indicator (letters next to each other).
'patch of ground' becomes 'lot'.
The middle of 'husk' is 'us'.
'us' after 'lot' is 'LOTUS'.
(Other definitions for lotus that I've seen before include "Reason for forgetfulness" , "A blooming" , "One of the lilies" , "Aquatic plant" , "the indolent took for eating" .)