diff --git a/df_caverns/config.lua b/df_caverns/config.lua
index 0794480..84bbbb0 100644
--- a/df_caverns/config.lua
+++ b/df_caverns/config.lua
@@ -52,3 +52,6 @@ setting("int", "underworld_glowing_pit_mapblocks", 8, "Average pit spacing measu
 setting("bool", "enable_primordial", true, "Enable primordial cavern")
 setting("int", "primordial_max", -3393, "Upper limit to primordial caverns")
 setting("int", "primordial_min", -4032, "Lower limit to primordial caverns")
+
+setting("bool", "restrict_trees_to_biomes", false, "Restrict underground tree growth to their home biomes")
+setting("bool", "restrict_farmables_to_biomes", false, "Restrict underground farmable plant growth to their home biomes")
\ No newline at end of file
diff --git a/df_caverns/growth_restrictions.lua b/df_caverns/growth_restrictions.lua
index 180f815..431ac47 100644
--- a/df_caverns/growth_restrictions.lua
+++ b/df_caverns/growth_restrictions.lua
@@ -1,169 +1,45 @@
-local black_cap_old = df_trees.black_cap_growth_permitted
-local black_cap_new = function(pos)
-	return df_caverns.get_biome(pos) == "blackcap"
-end
-df_trees.black_cap_growth_permitted = function(pos)
-	return black_cap_old(pos) and black_cap_new(pos)
+local add_biome_restrictions = function(root_table, function_name, biome_set)
+	local old_function = root_table[function_name]
+	root_table[function_name] = function(pos)
+		local biome = df_caverns.get_biome(pos)
+		return old_function(pos) and biome_set[biome]
+	end
 end
 
-local blood_thorn_old = df_trees.blood_thorn_growth_permitted
-local blood_thorn_new = function(pos)
-	return df_caverns.get_biome(pos) == "bloodthorn"
-end
-df_trees.blood_thorn_growth_permitted = function(pos)
-	return blood_thorn_old(pos) and blood_thorn_new(pos)
+if df_caverns.config.restrict_trees_to_biomes then
+
+	add_biome_restrictions(df_trees, "black_cap_growth_permitted", {blackcap = true})
+	add_biome_restrictions(df_trees, "blood_thorn_growth_permitted", {bloodthorn = true})
+	add_biome_restrictions(df_trees, "fungiwood_growth_permitted", {fungiwood = true, fungispore = true})
+	add_biome_restrictions(df_trees, "goblin_cap_growth_permitted", {goblincap = true, towergoblin = true})
+	add_biome_restrictions(df_trees, "nether_cap_growth_permitted", {nethercap = true})
+	add_biome_restrictions(df_trees, "spore_tree_growth_permitted", {sporetree = true, fungispore = true})
+	add_biome_restrictions(df_trees, "tower_cap_growth_permitted", {towercap = true, towergoblin = true})
+	add_biome_restrictions(df_trees, "tunnel_tube_growth_permitted", {tunneltube = true})
+	
+	-- Deliberately not biome-restricted
+	--add_biome_restrictions(df_trees, "torchspine_growth_permitted", {})
+	--add_biome_restrictions(df_trees, "spindlestem_growth_permitted", {})
+	
+	add_biome_restrictions(df_primordial_items, "primordial_mushroom_growth_permitted", {["primordial fungus"] = true})
+	add_biome_restrictions(df_primordial_items, "giant_mycelium_growth_permitted", {["primordial fungus"] = true})
+	add_biome_restrictions(df_primordial_items, "giant_fern_growth_permitted", {["primordial jungle"] = true})
+	add_biome_restrictions(df_primordial_items, "jungle_mushroom_growth_permitted", {["primordial jungle"] = true})
+	add_biome_restrictions(df_primordial_items, "jungletree_growth_permitted", {["primordial jungle"] = true})
+
 end
 
-local fungiwood_old = df_trees.fungiwood_growth_permitted
-local fungiwood_new = function(pos)
-	local biome = df_caverns.get_biome(pos)
-	return biome == "fungiwood" or biome == "fungispore"
-end
-df_trees.fungiwood_growth_permitted = function(pos)
-	return fungiwood_old(pos) and fungiwood_new(pos)
-end
-
-local goblin_cap_old = df_trees.goblin_cap_growth_permitted
-local goblin_cap_new = function(pos)
-	local biome = df_caverns.get_biome(pos)
-	return biome == "goblincap" or biome == "towergoblin"
-end
-df_trees.goblin_cap_growth_permitted = function(pos)
-	return goblin_cap_old(pos) and goblin_cap_new(pos)
-end
-
-local nether_cap_old = df_trees.nether_cap_growth_permitted
-local nether_cap_new = function(pos)
-	return df_caverns.get_biome(pos) == "nethercap"
-end
-df_trees.nether_cap_growth_permitted = function(pos)
-	return nether_cap_old(pos) and nether_cap_new(pos)
-end
-
--- Deliberately not biome-restricted
---local spindlestem_old = df_trees.spindlestem_growth_permitted
---local spindlestem_new = function(pos)
---end
---df_trees.spindlestem_growth_permitted = function(pos)
---	return spindlestem_old(pos) and spindlestem_new(pos)
---end
-
-local spore_tree_old = df_trees.spore_tree_growth_permitted
-local spore_tree_new = function(pos)
-	local biome = df_caverns.get_biome(pos)
-	return biome == "sporetree" or biome == "fungispore"
-end
-df_trees.spore_tree_growth_permitted = function(pos)
-	return spore_tree_old(pos) and spore_tree_new(pos)
-end
-
--- Deliberately not biome-restricted
---local torchspine_old = df_trees.torchspine_growth_permitted
---local torchspine_new = function(pos)
---end
---df_trees.torchspine_growth_permitted = function(pos)
---	return torchspine_old(pos) and torchspine_new(pos)
---end
-
-local tower_cap_old = df_trees.tower_cap_growth_permitted
-local tower_cap_new = function(pos)
-	local biome = df_caverns.get_biome(pos)
-	return biome == "towercap" or biome == "towergoblin"
-end
-df_trees.tower_cap_growth_permitted = function(pos)
-	return tower_cap_old(pos) and tower_cap_new(pos)
-end
-
-local tunnel_tube_old = df_trees.tunnel_tube_growth_permitted
-local tunnel_tube_new = function(pos)
-	return df_caverns.get_biome(pos) == "tunneltube"	
-end
-df_trees.tunnel_tube_growth_permitted = function(pos)
-	return tunnel_tube_old(pos) and tunnel_tube_new(pos)
-end
-
-------------------------------------------------
-
-local giant_fern_old = df_primordial_items.giant_fern_growth_permitted
-local giant_fern_new = function(pos)
-	return df_caverns.get_biome(pos) == "primordial jungle"
-end
-df_primordial_items.giant_fern_growth_permitted = function(pos)
-	return giant_fern_old(pos) and giant_fern_new(pos)
-end
-
-local giant_mycelium_old = df_primordial_items.giant_mycelium_growth_permitted
-local giant_mycelium_new = function(pos)
-	return df_caverns.get_biome(pos) == "primordial fungus"
-end
-df_primordial_items.giant_mycelium_growth_permitted = function(pos)
-	return giant_mycelium_old(pos) and giant_mycelium_new(pos)
-end
-
-local jungle_mushroom_old = df_primordial_items.jungle_mushroom_growth_permitted
-local jungle_mushroom_new = function(pos)
-	return df_caverns.get_biome(pos) == "primordial jungle"
-end
-df_primordial_items.jungle_mushroom_growth_permitted = function(pos)
-	return jungle_mushroom_old(pos) and jungle_mushroom_new(pos)
-end
-
-local jungletree_old = df_primordial_items.jungletree_growth_permitted
-local jungletree_new = function(pos)
-	return df_caverns.get_biome(pos) == "primordial jungle"
-end
-df_primordial_items.jungletree_growth_permitted = function(pos)
-	return jungletree_old(pos) and jungletree_new(pos)
-end
-
-local primordial_mushroom_old = df_primordial_items.primordial_mushroom_growth_permitted
-local primordial_mushroom_new = function(pos)
-	return df_caverns.get_biome(pos) == "primordial fungus"
-end
-df_primordial_items.primordial_mushroom_growth_permitted = function(pos)
-	return primordial_mushroom_old(pos) and primordial_mushroom_new(pos)
-end
-
---------------------------------------------------
-
---local cave_wheat_old = df_farming.growth_permitted["df_farming:cave_wheat_seed"]
---local cave_wheat_new = function(pos)
---end
---df_farming.growth_permitted["df_farming:cave_wheat_seed"] = function(pos)
---	return cave_wheat_old(pos) and cave_wheat_new(pos)
---end
---
---local dimple_cup_old = df_farming.growth_permitted["df_farming:dimple_cup_seed"]
---local dimple_cup_new = function(pos)
---end
---df_farming.growth_permitted["df_farming:dimple_cup_seed"] = function(pos)
---	return dimple_cup_old(pos) and dimple_cup_new(pos)
---end
---
---local pig_tail_old = df_farming.growth_permitted["df_farming:pig_tail_seed"]
---local pig_tail_new = function(pos)
---end
---df_farming.growth_permitted["df_farming:pig_tail_seed"] = function(pos)
---	return pig_tail_old(pos) and pig_tail_new(pos)
---end
---
---local quarry_bush_old = df_farming.growth_permitted["df_farming:quarry_bush_seed"]
---local quarry_bush_new = function(pos)
---end
---df_farming.growth_permitted["df_farming:quarry_bush_seed"] = function(pos)
---	return quarry_bush_old(pos) and quarry_bush_new(pos)
---end
---
---local sweet_pod_old = df_farming.growth_permitted["df_farming:sweet_pod_seed"]
---local sweet_pod_new = function(pos)
---end
---df_farming.growth_permitted["df_farming:sweet_pod_seed"] = function(pos)
---	return sweet_pod_old(pos) and sweet_pod_new(pos)
---end
---
---local plump_helmet_old = df_farming.growth_permitted["df_farming:plump_helmet_spawn"]
---local plump_helmet_new = function(pos)
---end
---df_farming.growth_permitted["df_farming:plump_helmet_spawn"] = function(pos)
---	return plump_helmet_old(pos) and plump_helmet_new(pos)
---end
\ No newline at end of file
+if df_caverns.config.restrict_farmables_to_biomes then
+	add_biome_restrictions(df_farming.growth_permitted, "df_farming:cave_wheat_seed",
+		{fungiwood = true, tunneltube = true, sporetree = true, fungispore = true})
+	add_biome_restrictions(df_farming.growth_permitted, "df_farming:dimple_cup_seed",
+		{towergoblin = true})
+	add_biome_restrictions(df_farming.growth_permitted, "df_farming:pig_tail_seed",
+		{sporetree = true, fungispore = true})
+	add_biome_restrictions(df_farming.growth_permitted, "df_farming:quarry_bush_seed",
+		{bloodthorn = true})
+	add_biome_restrictions(df_farming.growth_permitted, "df_farming:sweet_pod_seed",
+		{tunneltube = true, fungispore = true})
+	add_biome_restrictions(df_farming.growth_permitted, "df_farming:plump_helmet_spawn",
+		{fungiwood = true, towercap = true, goblincap = true, towergoblin = true})
+end
\ No newline at end of file
diff --git a/df_caverns/settingtypes.txt b/df_caverns/settingtypes.txt
index da19269..e7c5c95 100644
--- a/df_caverns/settingtypes.txt
+++ b/df_caverns/settingtypes.txt
@@ -74,3 +74,8 @@ dfcaverns_primordial_min (Lower limit of primordial caverns) int -4032
 # during mapgen of Primordial cavern layer mushroom caverns
 # then increasing this number may help.
 dcaverns_giant_mycelium_timer_spread (Giant Mycelium mapgen timer spread) int 10
+
+[Plant growth restrictions]
+
+dfcaverns_restrict_trees_to_biomes (Restrict underground tree growth to their home biomes) bool false
+dfcaverns_restrict_farmables_to_biomes (Restrict underground farmable plant growth to their home biomes) bool false
\ No newline at end of file