Spring back with green during more than half of April (6)
I believe the answer is:
recoil
'spring back' is the definition.
(I've seen this before)
'green during more than half of april' is the wordplay.
I cannot quite see how this works, but
'green' could be 'eco' (eco-friendly) and 'eco' is found in the answer.
This explanation may well be incorrect...
'with' is the link.
Can you help me to learn more?
(Other definitions for recoil that I've seen before include "Quail is here!" , "Fossil reptile" , "Feel disgust" , "kickback" , "Flich or kick back" .)