Herba is the "plant" aspect, composed of Victus and Terra. It is found in nearly all plants. Perfect sources include (wheat) seeds, pumpkin seeds, and vines, and it can also be distilled from nether wart. Its compounds include Arbor and Messis. Herba is used to fuel the Lamp of Growth, and heavy farming can use quite a lot of it. Nevertheless, it can frequently become surplus.