Beads on blades (3)
I believe the answer is:
dew
'beads on blades' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dew that I've seen before include "Moisture deposited overnight" , "Condensation at beginning or end of day" , "Moisture on ground" , "Overnight condensation" , "Morning or evening condensation" .)