diff --git a/bushes/init.lua b/bushes/init.lua
index 93103e9..a2a3213 100644
--- a/bushes/init.lua
+++ b/bushes/init.lua
@@ -206,7 +206,6 @@ plantslib:register_generate_plant({
     rarity = 101 - 4,  --3,4
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
-	check_air = false,
   },
   "abstract_bushes.grow_bush"
 )		
@@ -252,7 +251,6 @@ plantslib:register_generate_plant({
     rarity = 101 - 4,  --3,4
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
-	check_air = false,
   },
   "abstract_bushes.grow_youngtree2"
 )	
diff --git a/dryplants/juncus.lua b/dryplants/juncus.lua
index 72934d2..8f82d7d 100644
--- a/dryplants/juncus.lua
+++ b/dryplants/juncus.lua
@@ -99,7 +99,6 @@ plantslib:register_generate_plant({
 	near_nodes_vertical = 1,
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
-	check_air = false,
   },
   "abstract_dryplants.grow_juncus"
 )
@@ -121,7 +120,6 @@ plantslib:register_generate_plant({
 	near_nodes_vertical = 1,
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
-	check_air = false,
   },
   "abstract_dryplants.grow_juncus"
-)
\ No newline at end of file
+)
diff --git a/dryplants/meadowvariation.lua b/dryplants/meadowvariation.lua
index 2c3b554..da46294 100644
--- a/dryplants/meadowvariation.lua
+++ b/dryplants/meadowvariation.lua
@@ -21,7 +21,6 @@ plantslib:register_generate_plant({
     rarity = 25,
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
-	check_air = false,
   },
   "abstract_dryplants.grow_grass_variation"
-)
\ No newline at end of file
+)
diff --git a/dryplants/moregrass.lua b/dryplants/moregrass.lua
index 293a0d6..3587806 100644
--- a/dryplants/moregrass.lua
+++ b/dryplants/moregrass.lua
@@ -29,7 +29,6 @@ plantslib:register_generate_plant({
     rarity = 101 - TALL_GRASS_RARITY,
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
-	check_air = false,
   },
   "abstract_dryplants.grow_grass"
-)
\ No newline at end of file
+)
diff --git a/ferns/fern.lua b/ferns/fern.lua
index 01b807d..965a846 100644
--- a/ferns/fern.lua
+++ b/ferns/fern.lua
@@ -147,7 +147,6 @@ plantslib:register_generate_plant({ -- near trees (woodlands)
     humidity_min = 0.4,
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
-	check_air = false,
   },
   "abstract_ferns.grow_fern"
 )
@@ -174,7 +173,6 @@ plantslib:register_generate_plant({ -- near stone (mountains)
     humidity_min = 0.4,
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
-	check_air = false,
   },
   "abstract_ferns.grow_fern"
 )
@@ -212,7 +210,6 @@ plantslib:register_generate_plant({ -- near ores (potential mining sites)
     humidity_min = 0.4,
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
-	check_air = false,
   },
   "abstract_ferns.grow_fern"
 )
@@ -243,8 +240,7 @@ plantslib:register_generate_plant({
     humidity_min = 0.4,
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
-	check_air = false,
   },
   "abstract_ferns.grow_fern"
 )
-end
\ No newline at end of file
+end
diff --git a/ferns/gianttreefern.lua b/ferns/gianttreefern.lua
index bc45f76..87cfd4e 100644
--- a/ferns/gianttreefern.lua
+++ b/ferns/gianttreefern.lua
@@ -371,9 +371,8 @@ plantslib:register_generate_plant({
     plantlife_limit = -0.9,
     --humidity_max = 0.39,--1.0,
     --humidity_min = 0.5,
-    --temp_max = -1,-- -1.2,-- -0.5, -- ~ 55 °C
-    --temp_min = -0.35,-- -0.07, -- ~ 25 °C
-	check_air = false,
+    --temp_max = -1,-- -1.2,-- -0.5, -- ~ 55C
+    --temp_min = -0.35,-- -0.07, -- ~ 25C
   },
   "abstract_ferns.grow_giant_tree_fern"
 )
@@ -401,8 +400,7 @@ plantslib:register_generate_plant({
     humidity_min = 1.0,
     temp_max = -1.0,
     temp_min = 1.0,
-	check_air = false,
   },
   "abstract_ferns.grow_giant_tree_fern"
 )
-end
\ No newline at end of file
+end
diff --git a/ferns/treefern.lua b/ferns/treefern.lua
index c92c445..f90d052 100644
--- a/ferns/treefern.lua
+++ b/ferns/treefern.lua
@@ -212,7 +212,6 @@ plantslib:register_generate_plant({
     humidity_min = 0.4,
     temp_max = -0.5,
     temp_min = 0.13,
-	check_air = false,
   },
   "abstract_ferns.grow_tree_fern"
 )
@@ -240,7 +239,6 @@ plantslib:register_generate_plant({
     humidity_min = 1.0,
     temp_max = -1.0,
     temp_min = 1.0,
-	check_air = false,
   },
   "abstract_ferns.grow_tree_fern"
 )
diff --git a/trunks/generating.lua b/trunks/generating.lua
index cd897da..3078d31 100644
--- a/trunks/generating.lua
+++ b/trunks/generating.lua
@@ -354,7 +354,6 @@ plantslib:register_generate_plant({
 	near_nodes_vertical = 1,
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
-    check_air = false,
   },
   "abstract_trunks.place_trunk"
 )
diff --git a/youngtrees/init.lua b/youngtrees/init.lua
index 142e3d6..d443571 100644
--- a/youngtrees/init.lua
+++ b/youngtrees/init.lua
@@ -149,7 +149,6 @@ plantslib:register_generate_plant({
     rarity = 101 - 4,  --3,4
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
-	check_air = false,
   },
   "abstract_youngtrees.grow_youngtree"
 )