Youthful period, idiomatically (5,4)
I believe the answer is:
salad days
(Other definitions for salad days that I've seen before include "when one is young?" , "Youth; heyday" , "Carefree youth" , "Green term" , "Best time of youth" .)
I believe the answer is:
salad days
(Other definitions for salad days that I've seen before include "when one is young?" , "Youth; heyday" , "Carefree youth" , "Green term" , "Best time of youth" .)