Ironically, Patchouli would excel at wilderness survival.
? Finding water? Obviously solved by water magic
? Starting a fire? Fire magic, of course. Or focused sun magic if you want to show off.
? Building shelter? Use earth magic to turn the ground into a hut, or wood magic to make a literal treehouse.
? You never know when you need a knife, and you always have one with metal magic.
? Finding food? Some wood magic will determine where something safe to eat is, or simply turn bark into sugar. (Also see below.)
? Dangerous animals, or people? A direct blast with pretty much anything works as an attack spell. Great for hunting, too.
? Need a map of your surroundings? An earth/wood spell should do the trick, earth/wood/water if there?re creeks or rivers.
? Need to know where your surroundings are? An earth/moon/sun spell should make a functional GPS.
That should work for a start.