Minecraft wiki entry for Cocoa_bean_farming, associated text: For efficiency of space, as jungle logs are very common in a jungle biome, there is no reason to make a farm solely based on wood surface efficiency. The efficiency should rather be of space, and amount of materials used. Using water as a harvesting mechanism provides a far more compact solution, uses less materials, and can extend the farm beyond the single-column versions seen above. A great example of this type of farm can be seen in MinecraftMaximizer's and MikiMiner's designs.