Having support for the Uberous Soil from Twilight Forest would be great. Basically this soil will instantly cause anything planted on it to be fully grown. I'd try to do a datapack for it, but I have no idea what to do.

{ "type": "botanypots:soil", "input": { "item": "twilightforest:uberous_soil;" }, "display": { "block": "twilightforest:uberous_soil" }, "categories": ["dirt"], "ticks": 1 }

try that

According to this Wiki Uberous Soil gets transformed into regular dirt or farmland after one use. Which begs the questing if @Darkhax wants to support this kind of behavior at all, because it would not be a simple addition but require some adjusting of the mod logic.

I would be fine with this being implemented with different logic, for example making it grow 30% faster than normal. The Twilight Forest devs have expressed interest in adding support themselves however so I will leave this to them.