Definify.com

Webster 1913 Edition

Noun.

The state of being leafy.

leafiness ‎(countable and uncountable, plural leafinesses)

The state or condition of being leafy.
- 2007 September 30, Joyce Cohen, “A Recipe for Success”, in New York Times:
  “But the whole appeal of being out there was inextricably linked to the idea there were lawns and leafiness, so being in a big building didn’t feel like the right thing,” Mr. Patrick said.