diff --git a/cocos_palm.lua b/cocos_palm.lua
index 127f328..b1d3cdf 100644
--- a/cocos_palm.lua
+++ b/cocos_palm.lua
@@ -80,8 +80,11 @@ end
 --  ABM converts the trunk to a regular fruit trunk, and spawns some coconuts)
 minetest.register_abm({
 	nodenames = { "moretrees:palm_fruit_trunk_gen" },
-	interval = 1,
+	interval = 6,
 	chance = 1,
+	min_y = biome_lib.mapgen_elevation_limit.min,
+	max_y = biome_lib.mapgen_elevation_limit.max,
+	label = "converts palm trunk to a regular fruit trunk, and spawns some coconuts",
 	action = function(pos, node, active_object_count, active_object_count_wider)
 		minetest.swap_node(pos, {name="moretrees:palm_fruit_trunk"})
 		local poslist = minetest.find_nodes_in_area(
diff --git a/node_defs.lua b/node_defs.lua
index 957740a..a69fc69 100644
--- a/node_defs.lua
+++ b/node_defs.lua
@@ -556,7 +556,7 @@ end
 local poplar_leaves_drop = minetest.registered_nodes["moretrees:poplar_leaves"].drop
 minetest.override_item("moretrees:poplar_leaves", {
 	drop = {
-		max_items = poplar_leaves_drop.maxitems,
+		max_items = poplar_leaves_drop.max_items,
 		items = {
 			{items = {"moretrees:poplar_sapling"}, rarity = 1.33 * poplar_leaves_drop.items[1].rarity },
 			{items = {"moretrees:poplar_small_sapling"}, rarity = 1.33 * poplar_leaves_drop.items[1].rarity },