Oreberry bushes are commonly found in caves and have similar effects to a cactus if touched. However, they do much less damage and do not destroy items. More importantly, they grow "berries" of metal, such as aluminum and tin.
There are 6 types of Oreberry Bushes:
Oreberry bushes can only be planted on solid blocks. They must be planted in light level of 12 or below in order to be plant-able, light level of 9 and below to grow, and bonemeal cannot be used to accelerate this process.
It should be noted that each oreberry only gives one nugget when smelted or 1/9 of an ingot when smelted in a smeltery. A significantly large farm could produce many ingots an hour, but there's no way to fully automate such a farm as of now.
Essence oreberries (which glow green and yellow, similarly to vanilla XP) do not give you metal when smelted, but rather can be right-clicked for an XP boost, and have replaced the silver oreberry bush. Unlike other oreberry bushes, Essence Oreberries appear to grow on any light level.
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