Potato vessel? (3)
I believe the answer is:
pot
This clue might be a double definition.
'potato' is the first definition.
The definition and answer can be both plants as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'vessel?' is the second definition.
(type of container)
Can you help me to learn more?
(Other definitions for pot that I've seen before include "Preserve; drug" , "Receptacle" , "Kitty; marijuana" , "It sometimes calls the kettle black" , "Somewhere to go" .)