adjective
verdant
VUR-dunt/ˈvɜːrdnt/
Green with fresh, abundant vegetation.
A narrow trail winds through the verdant hills above town.

Etymology
The underlying image is of something becoming green. Applied to a landscape, verdant describes the greenness produced by growing vegetation.
In context
it's essentially a rain forest in here and it's so green and verdant it's unbelievably dense foliage
More examples
- Spring rain turns the dry valley into a verdant landscape.
- The river's verdant banks provide shelter for nesting birds.
- Her verdant garden stays green through the hottest months.
Forms
verdant