See an indication of going to seed (3)
I believe the answer is:
eye
'see' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for eye that I've seen before include "Good discernment" , "'Public' or 'private' body part" , "Aperture" , "Aim for" , "1 across, 4 across, for example" .)