This isnt a complete tree line but I will put in what I have/will place for a Pvp battle warden..
Druid Tree Wisdom Line***Wisdom-8
***Hierophant Grasp-4
***Hierophant Movement-7
***Hierophant Obfuscation-7
Intelligence Line***Intelligence-8
***Thunder Strike-1
Stamina Line***Serenicist Stamina-1
Warden Line ***Root-5
***Sow-5
***Protector fo Forest-4
***Cold Strike-4
***Whirl-1
*** Fire Strike-1
This works very well for me and on a Pve server it works just as well-just ask Bo..LOL