Growth Accelerator

The Growth Accelerator is a block added by Mystical Agriculture. It is used to make crops grow faster.

Usage
Growth Accelerators can be placed under any block that a plant is on to make it grow faster.

For Minecraft 1.12, growth accelerators scan a single column from 1 to 64 blocks above themselves looking for growables. They affect multiple plants in the column and multiple growth accelerators can affect the same plant. Because of this, a column of 63 growth accelerators can affect a single plant (64 minus one due to the soil block). Plots can be stacked vertically to enable multiple plants getting the effect of multiple accelerators though there are diminishing returns due to the accelerator's reach.

For later Minecraft versions, growth accelerators have tiers and each tier has a different reach, starting at 12 for inferium (tier 1) and increasing by 12 each tier until reaching 60 with supremium (tier 5).