Seeds can't be planted on Rustic Fertilized Soil or any of the fertilized farmlands from Farming for Blockheads. Other modded crops have varying results on the same soils (planting and popping off or just planting successfully)
Edit: They also can't be planted on the bonemealed farmland from Better with Mods or the Fertilized Dirt from Random Things.
Seeds can't be planted on Rustic Fertilized Soil or any of the fertilized farmlands from Farming for Blockheads. Other modded crops have varying results on the same soils (planting and popping off or just planting successfully)
Edit: They also can't be planted on the bonemealed farmland from Better with Mods or the Fertilized Dirt from Random Things.