Well,I tried to plant diamond seeds using the method of planting mineral crops on wiki. At first, I succeeded in obtaining diamond powder (using overgrowth fertilizer), but later they did not grow. I ensured that other conditions were the same, including sunlight, humidity, herbicide, etc. Is it the reason for overgrowth fertilizer? But after I destroyed them and replanted them, they still did not grow, which made me very confused.

You need a diamond block under the plant (anywhere up to four layers
straight down).
Message ID: @.***>

I did it....

@Speiger This is my Discord ID:BeryL12138#5603
I want to discuss some IC2C issues with you on discord.
:)

@BeryL12138 for that you should probably join the ic2 classic discord linked at the top of the curseforge page https://www.curseforge.com/minecraft/mc-mods/ic2-classic

@BeryL12138 for that you should probably join the ic2 classic discord linked at the top of the curseforge page https://www.curseforge.com/minecraft/mc-mods/ic2-classic

Sorry I can't find the link.
Where?
（crying）

right at the top. you need to click on the "Discord xxx online" thing

Also please make sure to look at the rules and to get the roles for the mods you want, each has their own channels that only are visible with the correct roles (#general is mostly for non mod specific talk)