diff --git a/iris.overworld.swamp/biomes/swamp-mountains.json b/iris.overworld.swamp/biomes/swamp-mountains.json
index ec38d12b..826333f9 100644
--- a/iris.overworld.swamp/biomes/swamp-mountains.json
+++ b/iris.overworld.swamp/biomes/swamp-mountains.json
@@ -24,6 +24,30 @@
             ]
         }
     ],
+    "slab": {
+        "dispersion": "WISPY",
+        "terrainZoom": 0.35,
+        "palette": [
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "minecraft:mossy_cobblestone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "minecraft:cobblestone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR"
+        ]
+    },
     "objects": [
         {
             "chance": 2.0,
diff --git a/iris.overworld.swamp/biomes/swamp-mushroom.json b/iris.overworld.swamp/biomes/swamp-mushroom.json
new file mode 100644
index 00000000..44ee2108
--- /dev/null
+++ b/iris.overworld.swamp/biomes/swamp-mushroom.json
@@ -0,0 +1,74 @@
+{
+    "name": "Mushroom Swamp",
+    "layers": [
+        {
+            "terrainZoom": 0.5,
+            "dispersion": "WISPY",
+            "palette": [
+                "MYCELIUM",
+                "MYCELIUM",
+                "MYCELIUM",
+                "MYCELIUM",
+                "GRAVEL",
+                "MYCELIUM",
+                "MYCELIUM",
+                "MYCELIUM"
+            ]
+        },
+        {
+            "minHeight": 2,
+            "maxHeight": 4,
+            "palette": [ 
+                "DIRT",
+                "COARSE_DIRT"
+            ]
+        },
+        {
+            "minHeight": 6,
+            "maxHeight": 18,
+            "dispersion": "SCATTER",
+            "palette": [
+                "STONE",
+                "ANDESITE",
+                "STONE"
+            ]
+        }
+    ],
+    "slab": {
+        "dispersion": "WISPY",
+        "terrainZoom": 0.35,
+        "palette": [
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "minecraft:mossy_cobblestone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "minecraft:cobblestone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR"
+        ]
+    },
+    "generators":[
+        {
+            "generator": "plain",
+            "min": 4,
+            "max": 11
+        },
+        {
+            "generator": "wavy",
+            "min": 2,
+            "max": 7
+        }
+    ],
+    "derivative": "MUSHROOM_FIELDS"
+}
\ No newline at end of file
diff --git a/iris.overworld.swamp/biomes/swamp-roofed.json b/iris.overworld.swamp/biomes/swamp-roofed.json
index d3238908..116184fc 100644
--- a/iris.overworld.swamp/biomes/swamp-roofed.json
+++ b/iris.overworld.swamp/biomes/swamp-roofed.json
@@ -33,9 +33,30 @@
             ]
         }
     ],
-    "children": [
-        "tundra-mountains"
-    ],
+    "slab": {
+        "dispersion": "WISPY",
+        "terrainZoom": 0.35,
+        "palette": [
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "minecraft:mossy_cobblestone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "minecraft:cobblestone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR"
+        ]
+    },
     "objects": [
         {
             "chance": 1,
diff --git a/iris.overworld.swamp/regions/swamp.json b/iris.overworld.swamp/regions/swamp.json
index 48c988ed..a3495818 100644
--- a/iris.overworld.swamp/regions/swamp.json
+++ b/iris.overworld.swamp/regions/swamp.json
@@ -7,7 +7,7 @@
     "landBiomes": [
         "swamp-roofed",
         "swamp-mountains",
-        "swamp-oak-denmyre"
+        "swamp-mushroom"
     ],
     "seaBiomes": [
         "swamp-ocean"
diff --git a/iris.overworld.swamp/biomes/swamp-oak-denmyre.json b/iris.overworld.temperate/biomes/temperate-oak-denmyre.json
similarity index 91%
rename from iris.overworld.swamp/biomes/swamp-oak-denmyre.json
rename to iris.overworld.temperate/biomes/temperate-oak-denmyre.json
index ddd782e3..77a9c226 100644
--- a/iris.overworld.swamp/biomes/swamp-oak-denmyre.json
+++ b/iris.overworld.temperate/biomes/temperate-oak-denmyre.json
@@ -36,6 +36,23 @@
             ]
         }
     ],
+    "slab": {
+        "dispersion": "WISPY",
+        "terrainZoom": 0.35,
+        "palette": [
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "minecraft:cobblestone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR",
+            "AIR"
+        ]
+    },
     "decorators": [
         {
             "zoom": 0.01,
@@ -96,8 +113,6 @@
                 "oak-medium/oak-denmyre-10",
                 "oak-medium/oak-denmyre-11",
                 "oak-medium/oak-denmyre-12"
-
-
             ],
             "translate": {
                 "x": 0,
@@ -129,8 +144,6 @@
                 "denmyre/oak-denmyre-clutter-8",
                 "denmyre/oak-denmyre-clutter-9",
                 "denmyre/oak-denmyre-clutter-10"
-
-
             ],
             "translate": {
                 "x": 0,
diff --git a/iris.overworld.temperate/biomes/temperate-oak-sephora.json b/iris.overworld.temperate/biomes/temperate-oak-forest.json
similarity index 97%
rename from iris.overworld.temperate/biomes/temperate-oak-sephora.json
rename to iris.overworld.temperate/biomes/temperate-oak-forest.json
index 3f2ed8b8..9f7259ef 100644
--- a/iris.overworld.temperate/biomes/temperate-oak-sephora.json
+++ b/iris.overworld.temperate/biomes/temperate-oak-forest.json
@@ -1,13 +1,10 @@
 {
-    "name": "Oak Sephora",
+    "name": "Oak Forest",
     "layers": [
         {
             "dispersion": "WISPY",
             "palette": [
                 "GRASS_BLOCK"
-
-
-
             ]
         },
         {
@@ -34,6 +31,9 @@
             ]
         }
     ],
+    "children": [
+        "temperate-oak-denmyre"
+    ],
     "decorators": [
         {
             "zoom": 0.1,
@@ -71,7 +71,6 @@
                 "enabled": false
             },
             "place": [
-
                 "hazel-oak/hoak-3",
                 "hazel-oak/hoak-4",
                 "hazel-oak/hoak-5",
@@ -101,7 +100,6 @@
                 "enabled": false
             },
             "place": [
-
                 "hazel-oak/s-hoak-3",
                 "hazel-oak/s-hoak-4",
                 "hazel-oak/s-hoak-5",
diff --git a/iris.overworld.temperate/regions/temperate.json b/iris.overworld.temperate/regions/temperate.json
index cc0d1adc..74d21122 100644
--- a/iris.overworld.temperate/regions/temperate.json
+++ b/iris.overworld.temperate/regions/temperate.json
@@ -8,7 +8,7 @@
         "temperate-plains",
         "temperate-bamboo-forest",
         "temperate-birch-forest",
-        "temperate-oak-sephora",
+        "temperate-oak-forest",
         "temperate-highlands"
     ],
     "seaBiomes": [
diff --git a/iris.overworld.tundra/biomes/tundra-beach-stone.json b/iris.overworld.tundra/biomes/tundra-beach-stone.json
index 3f1efa2a..3d07a03e 100644
--- a/iris.overworld.tundra/biomes/tundra-beach-stone.json
+++ b/iris.overworld.tundra/biomes/tundra-beach-stone.json
@@ -22,6 +22,8 @@
         "terrainZoom": 0.5,
         "palette": [
             "minecraft:stone_slab[type=bottom,waterlogged=false]",
+            "minecraft:andesite_slab[type=bottom,waterlogged=false]",
+            "AIR",
             "AIR"
         ]
     },
diff --git a/iris.overworld.tundra/biomes/tundra-taiga.json b/iris.overworld.tundra/biomes/tundra-taiga.json
index 71a63e7a..df234c99 100644
--- a/iris.overworld.tundra/biomes/tundra-taiga.json
+++ b/iris.overworld.tundra/biomes/tundra-taiga.json
@@ -45,6 +45,16 @@
             ]
         }
     ],
+    "slab": {
+        "dispersion": "WISPY",
+        "terrainZoom": 0.5,
+        "palette": [
+            "minecraft:stone_slab[type=bottom,waterlogged=false]",
+            "minecraft:andesite_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR"
+        ]
+    },
     "objects": [
         {
             "chance": 0.05,