diff --git a/src/main/java/de/ellpeck/naturesaura/recipes/ModRecipes.java b/src/main/java/de/ellpeck/naturesaura/recipes/ModRecipes.java
index fdae2608..9095e2f3 100644
--- a/src/main/java/de/ellpeck/naturesaura/recipes/ModRecipes.java
+++ b/src/main/java/de/ellpeck/naturesaura/recipes/ModRecipes.java
@@ -121,7 +121,7 @@ public final class ModRecipes {
                 ing(Blocks.REDSTONE_ORE)).register();
         new TreeRitualRecipe(res("nether_grass_powder"),
                 ing(Blocks.OAK_SAPLING),
-                ItemEffectPowder.setEffect(new ItemStack(ModItems.EFFECT_POWDER, 4), NetherGrassEffect.NAME), 400,
+                ItemEffectPowder.setEffect(new ItemStack(ModItems.EFFECT_POWDER, 24), NetherGrassEffect.NAME), 400,
                 ing(ModBlocks.GOLD_POWDER),
                 ing(ModBlocks.GOLD_POWDER),
                 ing(Blocks.NETHERRACK),
diff --git a/src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/decay.json b/src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/decay.json
index 25f97b30..b4bff7cc 100644
--- a/src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/decay.json
+++ b/src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/decay.json
@@ -6,7 +6,7 @@
     "pages": [
         {
             "type": "text",
-            "text": "When draining $(aura) from an area to the point that plants and other vegetation no longer have the natural energy required to support themselves, $(thing)Natural Decay$() kicks in. All $(item)Grass$() will decay, along with $(item)Leaves$() from trees and other plants. The more $(aura) is drained from an area, the worse this effect will get.$(br)It seems that this effect only occurs in the $(thing)overworld$()."
+            "text": "When draining $(aura) from an area to the point that plants and other vegetation no longer have the natural energy required to support themselves, $(thing)Natural Decay$() kicks in. All $(item)Grass$() will decay, along with $(item)Leaves$() from trees and other plants. The more $(aura) is drained from an area, the worse this effect will get.$(br)It seems that this effect only occurs in the $(thing)overworld$() and the $(thing)nether$()."
         }
     ]
 }
\ No newline at end of file
diff --git a/src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/nether_grass.json b/src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/nether_grass.json
new file mode 100644
index 00000000..0677a722
--- /dev/null
+++ b/src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/nether_grass.json
@@ -0,0 +1,17 @@
+{
+    "name": "Crimson Overgrowth",
+    "icon": "naturesaura:nether_grass",
+    "category": "effects",
+    "advancement": "naturesaura:positive_imbalance",
+    "pages": [
+        {
+            "type": "text",
+            "text": "As discussed in the chapter about $(l:effects/plant_boost)Vegetational Increase$(), an excess of $(aura) can migrate into plants and the like. A similar effect can be observed in the $(thing)nether$(): If the $(aura) levels are high enough, $(item)grass$() will begin to start growing on top of any $(item)netherrack$() in the area."
+        },
+        {
+            "type": "naturesaura:tree_ritual",
+            "recipe": "naturesaura:nether_grass_powder",
+            "text": "This effect can be inhibited using $(l:effects/effect_powder)Powder of Barrens$()."
+        }
+    ]
+}
\ No newline at end of file