Showing a lack of concentration, sprinkle water from on high into planted border (14)
I believe the answer is:
scatterbrained
'showing a lack of concentration' is the definition.
I can't judge whether this defines the answer.
'sprinkle water from on high into planted border' is the wordplay.
I cannot really see how this works, but
'sprinkle' could be 'scatter' (synonyms) and 'scatter' is found within the answer.
'water' could be 'rain' (rain is a kind of water) and 'rain' is found in the answer.
'border' could be 'bed' (a flower bed is the border of a garden) and 'bed' is found in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for scatterbrained that I've seen before include "Careless" , "Empty-headed" , "Disorganised and unable to concentrate" , "Disorganised, lacking concentration" , "absent-minded" .)