Something inserted in a pot I ordered it's a shrub (10)
I believe the answer is:
poinsettia
'a shrub' is the definition.
(poinsettia is a kind of shrub)
'something inserted in a pot i ordered' is the subsidiary indication.
'something inserted' becomes 'inset' (I've seen this before).
'in' indicates putting letters inside.
'ordered' is an anagram indicator.
'a'+'pot'+'i'='apoti'
'apoti' with letters rearranged gives 'potia'.
'inset' placed inside 'potia' is 'poinsettia'.
'it's' is the link.
(Other definitions for poinsettia that I've seen before include "bloom" , "Plant with showy bracts, usu. red, pink or white" , "Shrub often given at Christmas" , "American plant" , "poisonous bush" .)