"Well, to be honest, finding those plants is likely the easy part," Alise explained.  "Spider's grass is a special type of plant that absorbs spider venom, hence the name.  The cave near the forest is full of large spiders, so the grass is plentiful... but the spiders can be rather territorial, so you may have to fend them off while you gather it.  Gold knot burr is pretty much the only plant that grows in the rocky hills, but there tends to be a handful of strong monsters living there too... I think there's a few minotaur living in the area.  So... again, you should probably be ready to fight for it."