Cactus Nerf
Nerf Cactus Tower Farms. By requiring blocks North, East, West, South of the block above the cactus block to be air for the cactus to grow.
Performance
This most likely also improves Performance. (Not intensely tested)
Nerf Cacti by having them now also require the blocks around the block above to be air too to grow.
Nerf Cactus Tower Farms. By requiring blocks North, East, West, South of the block above the cactus block to be air for the cactus to grow.
This most likely also improves Performance. (Not intensely tested)