black dirt and mshrooms

[Judson h. Cames]

i can not get them to grow i have a fairly big gowing room and i made sure there is no water in it and no light got in it so am i missing something?

[verdant!]

Where is the room? It has to be pretty far down, so it will be dark enought.

[Judson h. Cames]

about ten blocks down from my normal base but no light reaches down there

[verdant!]

I got my black grass to grow by placing it a long ways down (about midway in the chasm, and off to the right a ways. I placed about six rows of grass, and when I came back about 2 days later there was plenty of grass. Also, try putting your flashlight in your inventory, and making it so you have to climb uphill to get to the black dirt (so no water will come).

[Judson h. Cames]

just that i used all of my mushrooms trying to get them to grow but they all died

[Gaddy Games]

They sometimes spontaneously grow but that doesn't happen often. You could try to find other natural black patches, there are several of them in the map (like 8-9).
About your room you might show us a screenshot so we can see if that would work?
For black ones the easiest way is to make several row of 1-thick black dirt. For others plants it wouldn't work as it let the water go away but that's exactly what we want in this case. Just be sure there are no water/trickle coming from above.

Just to give some data about spontaneous grow: for every dirt that can make a plant grow with the life-conditions ok, there are 0.033% of chance that the plant spontaneously grow, every 20s. That means (if my calculations are correct) that if you have 100 black dirt blocks, there is about 3.2% of probablity you get one spontaneous grow, every 20s. And 69% of probablity you got it after 12min (= one day/night cycle), 90% after 2 days.

[Judson h. Cames]

http://steamcommunity.com/sharedfiles/filedetails/?id=507625670 its not the biggest but its about 20 blocks of dirt

[Gaddy Games]

The place looks good (if you go out of it, because of your flashlight ^^). But it's quite small indeed.
You could make it a bit further away from your base (so it is not broken by monsters) and without backwalls and concrete everywhere - just one concrete or rock line on the top for the water, and a chaft on either side so water doesn't flow into it

[Judson h. Cames]

ok i will try that