You can download them HERE
conife_tree_gr – healthy green tree
conife_tree_dry – not so healthy green tree
conife_tree_sn – snowy tree
Includes shader file, which is used on screenshots, too.
Additional download link HERE
There are also alot of sources to download from TheWolfTeam, but currently mostly for W:ET.
TheWolfTeam Download Section
Source: WuTangH | TheWolfteam