diff --git a/ferns/gianttreefern.lua b/ferns/gianttreefern.lua
index f84afb1..09394c2 100644
--- a/ferns/gianttreefern.lua
+++ b/ferns/gianttreefern.lua
@@ -14,10 +14,10 @@ local S = plantlife_i18n.gettext
 -- lot of code, lot to load
 
 abstract_ferns.grow_giant_tree_fern = function(pos)
-	local pos_01 = {x = pos.x, y = pos.y + 1, z = pos.z}
-	if minetest.get_node(pos_01).name ~= "air"
-			and minetest.get_node(pos_01).name ~= "ferns:sapling_giant_tree_fern"
-			and minetest.get_node(pos_01).name ~= "default:junglegrass" then
+	local pos_aux = {x = pos.x, y = pos.y + 1, z = pos.z}
+	local name = minetest.get_node(pos_aux).name
+	if name ~= "air" and name ~= "ferns:sapling_giant_tree_fern"
+			and name ~= "default:junglegrass" then
 		return
 	end
 
@@ -64,7 +64,9 @@ abstract_ferns.grow_giant_tree_fern = function(pos)
 
 	local brk = false
 	for i = 1, size-3 do
-		if minetest.get_node({x = pos.x, y = pos.y + i, z = pos.z}).name ~= "air" then
+		pos_aux.y = pos.y + i
+		local name = minetest.get_node(pos_aux).name
+		if not (name == "air" or (i == 1 and name == "ferns:sapling_giant_tree_fern")) then
 			brk = true
 			break
 		end
diff --git a/ferns/treefern.lua b/ferns/treefern.lua
index f04a3e8..9073c54 100644
--- a/ferns/treefern.lua
+++ b/ferns/treefern.lua
@@ -13,10 +13,10 @@ assert(abstract_ferns.config.enable_treefern == true)
 
 abstract_ferns.grow_tree_fern = function(pos)
 
-	local pos_01 = {x = pos.x, y = pos.y + 1, z = pos.z}
-	if minetest.get_node(pos_01).name ~= "air"
-			and minetest.get_node(pos_01).name ~= "ferns:sapling_tree_fern"
-			and minetest.get_node(pos_01).name ~= "default:junglegrass" then
+	local pos_aux = {x = pos.x, y = pos.y + 1, z = pos.z}
+	local name = minetest.get_node(pos_aux).name
+	if name ~= "air" and name ~= "ferns:sapling_tree_fern"
+			and name ~= "default:junglegrass" then
 		return
 	end
 
@@ -30,7 +30,9 @@ abstract_ferns.grow_tree_fern = function(pos)
 	local i = 1
 	local brk = false
 	while (i < size) do
-		if minetest.get_node({x = pos.x, y = pos.y + i, z = pos.z}).name ~= "air" then
+		pos_aux.y = pos.y + i
+		name = minetest.get_node(pos_aux).name
+		if not (name == "air" or (i == 1 and name == "ferns:sapling_tree_fern")) then
 			brk = true
 			break
 		end
diff --git a/molehills/molehills_settings.txt b/molehills/molehills_settings.txt
index 2079574..1afc592 100644
--- a/molehills/molehills_settings.txt
+++ b/molehills/molehills_settings.txt
@@ -2,5 +2,5 @@
 
 Molehills_Max_Count		= 320 -- absolute maximum number in an area of 80x80x80 nodes
 
-Molehills_Rarity		= 87 -- larger values make molehills more rare (100 means chance of 0 %)
+Molehills_Rarity		= 95 -- larger values make molehills more rare (100 means chance of 0 %)