diff --git a/mods/ITEMS/mcl_core/nodes.lua b/mods/ITEMS/mcl_core/nodes.lua
index 45124677c2..836317f029 100644
--- a/mods/ITEMS/mcl_core/nodes.lua
+++ b/mods/ITEMS/mcl_core/nodes.lua
@@ -711,7 +711,6 @@ minetest.register_node("mcl_core:sapling", {
 		meta:set_int("stage", 0)
 	end,
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })
@@ -797,7 +796,6 @@ minetest.register_node("mcl_core:darksapling", {
 		meta:set_int("stage", 0)
 	end,
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })
@@ -941,7 +939,6 @@ minetest.register_node("mcl_core:junglesapling", {
 		meta:set_int("stage", 0)
 	end,
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })
@@ -1018,7 +1015,6 @@ minetest.register_node("mcl_core:acaciasapling", {
 		meta:set_int("stage", 0)
 	end,
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	stack_max = 64,
 	groups = {dig_immediate=3, plant=1,sapling=1,non_mycelium_plant=1,attached_node=1,dig_by_water=1,destroy_by_lava_flow=1,deco_block=1},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
@@ -1106,7 +1102,6 @@ minetest.register_node("mcl_core:sprucesapling", {
 		meta:set_int("stage", 0)
 	end,
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })
@@ -1186,7 +1181,6 @@ minetest.register_node("mcl_core:birchsapling", {
 		meta:set_int("stage", 0)
 	end,
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })
@@ -1291,7 +1285,6 @@ minetest.register_node("mcl_core:reeds", {
 	groups = {dig_immediate=3, craftitem=1, plant=1, non_mycelium_plant=1, dig_by_piston=1},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })
@@ -1848,7 +1841,6 @@ minetest.register_node("mcl_core:deadbush", {
 		fixed = {-6/16, -8/16, -6/16, 6/16, 8/16, 6/16},
 	},
 	node_placement_prediction = "",
-	on_place = mcl_util.on_place_non_mycelium_plant,
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })
diff --git a/mods/ITEMS/mcl_flowers/init.lua b/mods/ITEMS/mcl_flowers/init.lua
index eef9c4b472..62cedc9eff 100644
--- a/mods/ITEMS/mcl_flowers/init.lua
+++ b/mods/ITEMS/mcl_flowers/init.lua
@@ -172,7 +172,19 @@ local function add_large_plant(name, desc, longdesc, bottom_img, top_img, inv_im
 			local bottom_buildable = minetest.registered_nodes[minetest.get_node(bottom).name].buildable_to
 			local top_buildable = minetest.registered_nodes[minetest.get_node(top).name].buildable_to
 			local floorname = minetest.get_node({x=bottom.x, y=bottom.y-1, z=bottom.z}).name
-			if floorname ~= "mcl_core:mycelium" and minetest.registered_nodes[floorname].walkable and bottom_buildable and top_buildable then
+
+			local light_night = minetest.get_node_light(bottom, 0.0)
+			local light_day = minetest.get_node_light(bottom, 0.5)
+			local light_ok = false
+			if (light_night and light_night >= 8) or (light_day and light_day >= minetest.LIGHT_MAX) then
+				light_ok = true
+			end
+
+			-- Placement rules:
+			-- * Allowed on dirt or grass block
+			-- * Only with light level >= 8
+			-- * Only if two enough space
+			if (floorname == "mcl_core:dirt" or floorname == "mcl_core:dirt_with_grass" or floorname == "mcl_core:dirt_with_grass_snow") and bottom_buildable and top_buildable and light_ok then
 				-- Success! We can now place the flower
 				minetest.sound_play(minetest.registered_nodes["mcl_flowers:"..name].sounds.place, {pos = bottom, gain=1})
 				minetest.set_node(bottom, {name="mcl_flowers:"..name})