diff --git a/changelog/2026-01.mdx b/changelog/2026-01.mdx
index adc957c0..cad0673f 100644
--- a/changelog/2026-01.mdx
+++ b/changelog/2026-01.mdx
@@ -3,6 +3,38 @@ title: "January 2026"
 description: "Duel Arena, Prayer, Collision, Smithing, Website, and UI Improvements"
 ---
 
+## March 2026
+
+### Tree Model Updates
+
+*Merged: March 12, 2026*
+
+Visual improvements to tree models and biome vegetation:
+
+- **Wind Pine Tree**: New tree type for tundra biome (split from dead tree variants)
+- **Maple Leaves**: Recolored to warm vermillion red-orange (#D04838)
+- **Knotwood Leaves**: Recolored from golden-yellow to warm amber (#C4832A)
+- **Model Scales**: Adjusted tree model scales for better visual proportions
+- **Manifest**: Updated `vegetation.json` with new wind pine tree type
+
+---
+
+### Biome Configuration Updates
+
+*Merged: March 9-10, 2026*
+
+Biome system synchronized with server configuration:
+
+- **Active Biomes**: Reduced from 8 biomes to 3 active biomes (tundra, forest, canyon)
+- **Walkability Thresholds**: Increased maxSlope values to match terrain generation
+  - Tundra: 0.8 → 1.8
+  - Forest: 0.8 → 1.5
+  - Canyon: 0.6 → 2.5
+- **Terrain Textures**: Fixed biome textures with actual source textures from `terrain_textures/`
+- **Manifest**: `biomes.json` synchronized with server version
+
+---
+
 ## Week 6: February 2-6
 
 ### Ammunition Manifest Update
diff --git a/wiki/data/overview.mdx b/wiki/data/overview.mdx
index 6d8ae1db..24bbaf77 100644
--- a/wiki/data/overview.mdx
+++ b/wiki/data/overview.mdx
@@ -683,9 +683,19 @@ interface VegetationAsset {
 - `fallen_tree` - Fallen logs
 - `mushroom` - Giant mushrooms (added in recent update)
 
+### Biome Configuration
+
+Biomes in `biomes.json` define terrain properties and procedural vegetation layers. The active biome set includes:
+
+- **Tundra** - Frozen terrain with wind pines (maxSlope: 1.8)
+- **Forest** - Dense woodland areas (maxSlope: 1.5)
+- **Canyon** - Rocky terrain with steep slopes (maxSlope: 2.5)
+
+The `maxSlope` threshold determines walkability and vegetation placement, adjusted to match actual terrain generation slopes from terracing and landscape features.
+
 ### Biome Vegetation Layers
 
-Biomes in `biomes.json` define procedural vegetation layers that reference vegetation assets:
+Biomes define procedural vegetation layers that reference vegetation assets:
 
 ```typescript
 interface VegetationLayer {
@@ -708,6 +718,10 @@ interface VegetationLayer {
 - Tree density reduced in plains biome (8 → 5)
 - Mushroom clustering varies by biome (cluster size 3-8)
 - Firemaking fire 3D model added (`models/firemaking-fire/firemaking-fire.glb`)
+- Wind pine tree type added for tundra biome (split from dead tree variants)
+- Maple tree leaves recolored to warm vermillion red-orange (#D04838)
+- Knotwood tree leaves recolored from golden-yellow to warm amber (#C4832A)
+- Tree model scales adjusted for better visual proportions
 
 ---