minecraft-assets/data/minecraft/worldgen/configured_feature/potato_leaf.json

{
  "type": "minecraft:simple_block",
  "config": {
    "to_place": {
      "type": "minecraft:simple_state_provider",
      "state": {
        "Name": "minecraft:potato_leaves",
        "Properties": {
          "distance": "7",
          "persistent": "false",
          "waterlogged": "false"
        }
      }
    }
  }
}