### Clue: Inquisitor's head put on block after painting plant (9)
### Answer: ARTICHOKE 
 ### Explanation: Definition: plant 
 [ **1st letter of**(…'s head) "Inquisitor" **plus**(put on, in a down clue) CHOKE(to block the flow of, eg. in pipes) ] **placed after**(after) ART(a form of which is painting).