ver·dure 
(vûrjər)
(vûrjər)n.
1.
a. The lush greenness of flourishing vegetation.
b. Vigorous greenery.
2. A fresh or flourishing condition: the verdure of childhood.
[Middle English, from Old French, from verd, green, from Latin viridis.]
verdur·ous adj.
verdur·ous·ness n.