Yes, the
Warden's Charge set is just nature skills, not for Warden class (def/hunt). It should be properly named Nature's Charge or Gaia's Charge or something befitting nature. For your Warden, you have a choice of
Alexander's Panopoly (all skills, but includes spear),
Babylonian Raiment (no skills, just set with spear),
Hunter's Armor (hunt skills), or
Tracker's Armor (hunt/bow skills). Or there are many legendary items that give bonuses to Hunt and/or Defense skills.
Go to
http://www.gamebanshee.com/titanquest/equipment.php for pics and descriptions. Good luck and good hunting!