Increases the speed of farms initial and or per tier by a configurable multiplier. So you don't need to place millions of them. This makes the game easier... Sorry?
Don't forget to insert the plant/animal modules to get to a normal speed.
If you are confused by the "Don't forget to insert the plant/animal modules to get to a normal speed." remark: I haven't played the newer versions of pyanodons mods yet. But in the past there were items like moss or saplings that functioned as modules for the farms. You'll still need to craft and place them.