Floor fungus growth rate on muddie rocky floor vs soil floor

[Mr. Wiggles]

I noticed floor fungus grows much quicker on soil floor (sand, clay) than on muddied rocky floor.
The wiki states that floor fungus/cave moss grows on muddied floor just as quickly.
What do you think? I am quite sure the wiki needs to be updated. I will try to submerge the floor with piles of muds to see if the amount of mud affects the growth rate, although imo this does not seem to be the case just as the wiki says.
What do you think

[Fel]

It grows at the same rate but it is very much based on randomness (some tiles will have fully grown moss while some others would barely have any or even none yet).

If you wanted to compare, you would need to make a new embark where the caverns were not breached yet, dig out a massive room in the soil layer, the same size in the stone layer and muddy it, and if you want to check the amount of mud as well then a third one with maximum mud on every tile.

Once all of that is ready, make sure nobody will go to these rooms and breach the caverns to start the spread.
Take screenshots while paused at regular intervals to be able to compare, then after a few ingame years you should be able to compare properly.

Of course you would ideally want to do that several times to greatly lower the effect of randomness but if the areas are large enough (for example just about the whole default embark size so preferably a flat map) it should already keep randomness at a reasonable level.

And who knows, maybe things did change and moss grows faster on soil now.

[Mr. Wiggles]

Originally posted by Fel:

It grows at the same rate but it is very much based on randomness (some tiles will have fully grown moss while some others would barely have any or even none yet).

If you wanted to compare, you would need to make a new embark where the caverns were not breached yet, dig out a massive room in the soil layer, the same size in the stone layer and muddy it, and if you want to check the amount of mud as well then a third one with maximum mud on every tile.

Once all of that is ready, make sure nobody will go to these rooms and breach the caverns to start the spread.
Take screenshots while paused at regular intervals to be able to compare, then after a few ingame years you should be able to compare properly.

Of course you would ideally want to do that several times to greatly lower the effect of randomness but if the areas are large enough (for example just about the whole default embark size so preferably a flat map) it should already keep randomness at a reasonable level.

And who knows, maybe things did change and moss grows faster on soil now.

I think they did. In one of my runs I dug two quite big caverns, one deeper on rock and one near the surface on soil. The soil took a few in game months to be covered on fungus and growing caps. The mud had fungus here and there. I still have the save game.

[Empath demon]

My subjective experience reflects OP's observation, muddied floors seem to grow fungus at a dramatically slower rate than soil.

[Mr. Wiggles]

Originally posted by Empath demon:

My subjective experience reflects OP's observation, muddied floors seem to grow fungus at a dramatically slower rate than soil.

Today or tomorrow I will try again. Im currently embarked on a mountain and there is no soil at all. This is not a problem for farming but it could be a big problem for pastures and indoor tree farms

[RoosterBoy]

I can also confirm mud is noticeably slower than soil.

[Fel]

Well, it wouldn't be the first time I was wrong, and probably won't be the last either.

[Mr. Wiggles]

Originally posted by Fel:

Well, it wouldn't be the first time I was wrong, and probably won't be the last either.

The wiki does say the growth rate is the same, maybe there is a bug introduced with new updates

[Mr. Wiggles]

By the way, mud will turn into soil eventually. Plants still grow on it and when they are trampled or get collectd or chopped they leave soil

[Mr. Wiggles]

The wiki does also say, regarding indoor fungus tree farming, that fungus trees need *three years* to start appearing and growing at normal rates when on new muddied tiles. I think this might be correlated to floor fungus growth rates, maybe *on new muddied tiles* they start slowly and then speed up reaching maturity at three years.