Rosewood Armor

Light armor
Armor	Cost	Armor/Shield Bonus	Maximum Dexterity Bonus	Armor Check	Penalty Arcane Spell Failure Chance	Speed (30 ft.)	Speed (20 ft.)	Weight. 1
Rosewood armor	50 gp	+2	+6	0	10%	30 ft.	20 ft.	15 lbs.

This suit of leather armor is wrapped in special rose vines.

Benefit: Treat this  as leather armor with armor spikes. The vines must be watered with at least  1 gallon of water each day or they wither and die, turning the armor into normal leather armor.

Source  Adventurer’s Armory, Pathfinder Campaign Setting