The Big Trees - 1952 is rated/received certificates of: Australia:G Canada:G (Ontario) Finland:K-16 Germany:12 (DVD rating) Greece:K Portugal:M/12 UK:A (original rating) UK:PG (video rating) (2001) (2003) (2004) (2005) (2007) USA:Approved (MPAA rating: certificate #15450) West Germany:12 (nf)
Fake Plastic Trees by Radiohead
The walking, talking tree-like beings in Lord of the Rings are called Ents. If you referred to actual species of trees, aside from real-world trees (some of which have names in Tolkien's languages), there are the Mellyrn (singular Mallorn). The Mallorn tree is the one whose leaves turn golden in autumn and do not fall of until spring, and are most prominenty seen in Lothlórien.
Sebastian Bradley, not from Neon Trees, sadly...
as for trees there are the Western hemlock, sitka spruce, and the cedar tree
Men in Trees - 2006 is rated/received certificates of: Australia:PG
Dead Trees - 2005 is rated/received certificates of: UK:Approved
Tall as Trees - 2008 is rated/received certificates of: USA:PG-13
Trees and Jamaica Daddy - 1957 is rated/received certificates of: USA:Approved
Things That Hang from Trees - 2006 is rated/received certificates of: USA:R
The Man Amongst Trees - 2007 is rated/received certificates of: Australia:MA
It Grows on Trees - 1952 is rated/received certificates of: Finland:S USA:Approved USA:Passed
Flowers and Trees - 1932 is rated/received certificates of: Argentina:Atp Portugal:M/4 USA:Approved
Dirtgirlworld - 2009 Trees 1-47 is rated/received certificates of: Australia:G
Extreme Christmas Trees - 2011 TV is rated/received certificates of: USA:TV-PG
Trees 2 The Root of All Evil - 2004 is rated/received certificates of: UK:15
No Trees in the Street - 1959 is rated/received certificates of: Finland:K-16 Sweden:15 UK:A UK:PG (video rating)