diff --git a/mods/bg_tree/node_leaves.lua b/mods/bg_tree/node_leaves.lua
index 1fa19cb..79d7479 100644
--- a/mods/bg_tree/node_leaves.lua
+++ b/mods/bg_tree/node_leaves.lua
@@ -66,26 +66,33 @@ reg_leaves("leaves_alive", {
 -- TODO: generalize stacking node registration and put into API.
 local decomposing_leaves_layers = 4
 
-local after_place_stack = function (pos)
+local function after_place_stack (pos)
 	local node = minetest.get_node(pos)
 	if not blockgame.starts_with(node.name, modname .. ":leaves_decomposing") then return end
 
 	local below = pos + blockgame.vector.dirs.down
 	local below_node = minetest.get_node(below)
-	if not blockgame.starts_with(below_node.name, modname .. ":leaves_decomposing") then return end
+	if blockgame.starts_with(below_node.name, modname .. ":leaves_decomposing") then
+		local def = minetest.registered_nodes[node.name]
+		local below_def = minetest.registered_nodes[below_node.name]
 
-	local def = minetest.registered_nodes[node.name]
-	local below_def = minetest.registered_nodes[below_node.name]
+		if below_def.level ~= decomposing_leaves_layers then
+			local max_diff = decomposing_leaves_layers - below_def.level
+			local diff = math.min(max_diff, def.level)
 
-	if below_def.level == decomposing_leaves_layers then return end
-	local max_diff = decomposing_leaves_layers - below_def.level
-	local diff = math.min(max_diff, def.level)
+			minetest.swap_node(below, {name = modname .. ":leaves_decomposing_" .. (below_def.level + diff)})
+			if diff == def.level then
+				minetest.remove_node(pos)
+			else
+				minetest.swap_node(pos, {name = modname .. ":leaves_decomposing_" .. (def.level - diff)})
+			end
+		end
+	end
 
-	minetest.swap_node(below, {name = modname .. ":leaves_decomposing_" .. (below_def.level + diff)})
-	if diff == def.level then
-		minetest.remove_node(pos)
-	else
-		minetest.swap_node(pos, {name = modname .. ":leaves_decomposing_" .. (def.level - diff)})
+	local above = pos:offset(0, 1, 0)
+	local above_node = minetest.get_node(above)
+	if blockgame.starts_with(above_node.name, modname .. ":leaves_decomposing") then
+		after_place_stack(above)
 	end
 end