@smaronenine I believe the seed is to make each distribution different from the others by giving each distribution a random seed by default to change where the plants are placed. So if you made two distributions with the same plants they would still be different.
The Scale option is to change the size of the plants. The red is smaller and the yellow is bigger. You can use this to make all the plants a little bigger in an area or I like to use it to shrink down the small rocks a little when I find they're too big.
It has been quite a while since I finished Hardrock. Since then I have been working on a new map that has been in the works for too long but I am happy to say the The Gorge is finally finished.
So go check it out and let me know what you think.
Check it out here: https://steamcommunity.com/sharedfiles/filedetails/?id=1654117307