If you enjoy the vernal lushness of the landscape, that’s a kind of fancy way to say you like the way nature looks in the springtime.
The word vernal entered English in the sixteenth century, tracing all the way back to the Latin word ver, meaning spring. Use the adjective vernal to describe something that occurs in springtime or is related to springtime. You might be familiar with the vernal equinox, which indicates the beginning of spring in the Northern Hemisphere. The word vernal can also be used more broadly to describe something youthful or fresh — springlike.