I tried to put the vivid grass from the botania mod into the pot and it makes the game crash!
Never mind, it crashes with any type of soil....

Please include the versions and crash logs.

I get this crash when I click dirt on to any Botany Pot 1.16.1 version 3.0.6. I haven't tried it with any other kind of soil. I was using the Valhelsia 3 Modpack and added Botany Pots (https://www.curseforge.com/minecraft/modpacks/valhelsia-3) This is the crash report I got when it crashed.
crash-2020-08-23_22.42.11-client.txt

Your issue report says you're using a wrong / outdated version of Bookshelf. The current recommended version of Bookshelf for 1.16.1 is 3.6.20.