### Clue: Large insect's under tip of pampas grass in tub (5,3)
### Answer: PLANT POT 
 ### Explanation: Definition: tub
 [ L(abbrev. for "large", a clothing size) + ANT(a social insect) ] **placed below**(…'s under, in a down clue) **1st letter of**(tip of) "pampas" + POT(slang, like "grass", for cannabis/marijuana).