diff --git a/mods/bg_tree/grow_sapling.lua b/mods/bg_tree/grow_sapling.lua
index d29080a..ff32078 100644
--- a/mods/bg_tree/grow_sapling.lua
+++ b/mods/bg_tree/grow_sapling.lua
@@ -87,7 +87,7 @@ blockgame.register_increasing_abm({
 		-- grow out leaves to the sides.
 		local sides = blockgame.vector.get_sides_of(above)
 		for _, side in pairs(sides) do
-			blockgame.attempt_place(side, {name = leaves_growing})
+			blockgame.attempt_place(side, {name = leaves_growing}, {modname .. ":leaves_alive"})
 		end
 	end,
 })