Buddha attained enlightenment while meditating under a bodhi tree for 49 days. He frequently spent months each year in forests practicing mindfulness of breathing, even after his enlightenment, as a pleasant abiding and to set a good example to his students. He died peacefully in a forested area.
It is my recommendation that all Buddhists should meditate often in nature, under a tree, etc.
(Of course, meditation goes far beyond that, it should be 24/7)