Stalks (5)
'stalks' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for reeds that I've seen before include "Grasses at river's edge" , "They vibrate to produce the sound of various musical instruments" , "Stems for pens" , "Plants providing thatching material" , "Marsh plants with tall straight stems" .)
'stalks' is the definition.
(I know this)
This is all the clue.
(Other definitions for stems that I've seen before include "Structures that support plants" , "springs" , "gets arrested?" , "Dams" , "Long narrow parts of flowers" .)