diff --git a/mods/MAPGEN/mcl_biomes/init.lua b/mods/MAPGEN/mcl_biomes/init.lua
index 52ac3ab00..3eec41be9 100644
--- a/mods/MAPGEN/mcl_biomes/init.lua
+++ b/mods/MAPGEN/mcl_biomes/init.lua
@@ -3045,6 +3045,8 @@ local function register_decorations()
 			octaves = 3,
 			persist = 0.6
 		},
+		spawn_by = "air",
+		num_spawn_by = 8,
 		decoration = "mcl_core:cactus",
 		biomes = {"Desert",
 			"Mesa","Mesa_sandlevel",
diff --git a/mods/MAPGEN/mcl_mapgen_core/init.lua b/mods/MAPGEN/mcl_mapgen_core/init.lua
index df7a07644..abb75baeb 100644
--- a/mods/MAPGEN/mcl_mapgen_core/init.lua
+++ b/mods/MAPGEN/mcl_mapgen_core/init.lua
@@ -670,6 +670,8 @@ local function register_mgv6_decorations()
 			octaves = 3,
 			persist = 0.6
 		},
+		spawn_by = "air",
+		num_spawn_by = 8,
 		decoration = "mcl_core:cactus",
 		height = 1,
 		height_max = 3,