Random patch

A random patch is a terrain feature composed of naturally generating clusters of plants or fungi such as grass, ferns, and flowers.

Types
Vegetation patches can be composed of:
 * General: grass, ferns, flowers, sugar cane, sweet berry bushes, pumpkins, mushrooms, bamboo and melons
 * Underwater: seagrass
 * Oceans: kelp
 * Deserts: dead bushes and cacti
 * The Nether: fire, mushrooms