Came up with a means of watering a flower (5)
I believe the answer is:
arose
'came up' is the definition.
(I've seen this before)
'a flower' is the wordplay.
'flower' becomes 'rose' (I've seen this before).
'a'+'rose'='AROSE'
'with a means of watering' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for arose that I've seen before include "Cropped up" , "Came about" , "Happened" , "Occurred; stood up" , "Originated (from)" .)