Mods in den Spieleordner reingeschoben. So richtig tief.

mods/farming/crops/hemp.lua

@@ -118,7 +118,7 @@ def.drop = {
 	items = {
 		{items = {"farming:hemp_leaf 2"}, rarity = 1},
 		{items = {"farming:hemp_leaf"}, rarity = 2},
-		{items = {"farming:seed_hemp"}, rarity = 1},
+		{items = {"farming:seed_hemp 2"}, rarity = 1},
 		{items = {"farming:seed_hemp"}, rarity = 2}
 	}
 }
@@ -135,4 +135,23 @@ farming.registered_plants["farming:hemp"] = {
 }
 
 -- mapgen
-farming.register_decoration("hemp",7)
+
+minetest.register_decoration({
+	deco_type = "simple",
+	place_on = {
+		"default:dirt_with_grass", "default:dirt_with_rainforest_litter",
+		"mcl_core:dirt_with_grass", "ethereal:prairie_dirt"
+	},
+	sidelen = 16,
+	noise_params = {
+		offset = 0,
+		scale = farming.hemp,
+		spread = {x = 100, y = 100, z = 100},
+		seed = 420,
+		octaves = 3,
+		persist = 0.6
+	},
+	y_min = 3, y_max = 45,
+	decoration = "farming:hemp_7",
+	spawn_by = "group:tree", num_spawn_by = 1
+})