diff --git a/server/src/systems/__tests__/gatheringSystem.test.ts b/server/src/systems/__tests__/gatheringSystem.test.ts
index 18e0503..0017798 100644
--- a/server/src/systems/__tests__/gatheringSystem.test.ts
+++ b/server/src/systems/__tests__/gatheringSystem.test.ts
@@ -6,13 +6,14 @@ import type { Needs, Movement, NPCBrain, Position, Stats, StatModifiers } from '
 import type { StructureData } from '../buildingSystem.js';
 import { PRODUCTIVITY_RECOVERY_RATE } from '@dflike/shared';
 import { createRuntimeConstants } from '../../config/runtimeConstants.js';
+import { industryConfig } from '../../config/industryConfig.js';
 
 const rc = createRuntimeConstants();
 
 function createGatheringNPC(world: World, x: number, y: number, overrides?: { strength?: number; productivity?: number }) {
   const e = world.createEntity();
   world.addComponent<Position>(e, 'position', { x, y });
-  world.addComponent<Needs>(e, 'needs', { hunger: 80, energy: 80, productivity: overrides?.productivity ?? 30 });
+  world.addComponent<Needs>(e, 'needs', { hunger: 80, thirst: 80, energy: 80, productivity: overrides?.productivity ?? 30 });
   world.addComponent<Movement>(e, 'movement', { state: 'idle', target: null, path: [], direction: 0, moveProgress: 0 });
   world.addComponent<NPCBrain>(e, 'npcBrain', { currentGoal: 'gather', goalQueue: [] });
   world.addComponent<Map<string, number>>(e, 'inventory', new Map());
@@ -191,4 +192,44 @@ describe('gatheringSystem', () => {
     const needs = world.getComponent<Needs>(e, 'needs')!;
     expect(needs.productivity).toBeGreaterThan(30);
   });
+
+  it('depletes berry bush on gather completion', () => {
+    const world = new World();
+    const map = new GameMap(10, 10);
+    map.resourceTiles = [{ x: 3, y: 3, resourceType: 'berries' }];
+    map.initBerryBush(3, 3, 5);
+    const e = createGatheringNPC(world, 3, 3);
+    // Start gathering
+    gatheringSystem(world, map, rc);
+    const gs = world.getComponent<GatheringState>(e, 'gatheringState')!;
+    expect(gs).toBeDefined();
+    // Fast-forward to completion
+    gs.ticksRemaining = 1;
+    gatheringSystem(world, map, rc);
+    expect(map.getBerryBush(3, 3)!.berryCount).toBe(4);
+  });
+
+  it('skips depleted berry bush when starting gather', () => {
+    const world = new World();
+    const map = new GameMap(10, 10);
+    map.resourceTiles = [{ x: 3, y: 3, resourceType: 'berries' }];
+    map.initBerryBush(3, 3, 5);
+    map.getBerryBush(3, 3)!.berryCount = 0;
+    const e = createGatheringNPC(world, 3, 3);
+    gatheringSystem(world, map, rc);
+    const gs = world.getComponent<GatheringState>(e, 'gatheringState');
+    expect(gs).toBeUndefined();
+  });
+
+  it('regrows berries over time', () => {
+    const world = new World();
+    const map = new GameMap(10, 10);
+    map.initBerryBush(3, 3, 5);
+    map.getBerryBush(3, 3)!.berryCount = 3;
+    // Simulate regrowth ticks
+    for (let i = 0; i < industryConfig.berryRegrowthTicks; i++) {
+      gatheringSystem(world, map, rc);
+    }
+    expect(map.getBerryBush(3, 3)!.berryCount).toBe(4);
+  });
 });
diff --git a/server/src/systems/gatheringSystem.ts b/server/src/systems/gatheringSystem.ts
index c8dec60..51d9775 100644
--- a/server/src/systems/gatheringSystem.ts
+++ b/server/src/systems/gatheringSystem.ts
@@ -13,6 +13,17 @@ export interface GatheringState {
 }
 
 export function gatheringSystem(world: World, map: GameMap, rc: RuntimeConstants): void {
+  // Berry bush regrowth
+  for (const [, bush] of map.berryBushes) {
+    if (bush.berryCount < bush.maxBerries) {
+      bush.ticksSinceLastRegrowth++;
+      if (bush.ticksSinceLastRegrowth >= industryConfig.berryRegrowthTicks) {
+        bush.berryCount++;
+        bush.ticksSinceLastRegrowth = 0;
+      }
+    }
+  }
+
   for (const entity of world.query('npcBrain', 'position', 'needs', 'movement')) {
     const brain = world.getComponent<NPCBrain>(entity, 'npcBrain')!;
 
@@ -34,6 +45,12 @@ export function gatheringSystem(world: World, map: GameMap, rc: RuntimeConstants
         if (inv) {
           addItem(inv, gs.resourceType, industryConfig.gatherYield);
         }
+        // Deplete berry bush
+        if (gs.resourceType === 'berries') {
+          const bush = map.getBerryBush(pos.x, pos.y);
+          if (bush) bush.berryCount = Math.max(0, bush.berryCount - 1);
+        }
+
         world.removeComponent(entity, 'gatheringState');
 
         // Decide next action: drop off if at carry capacity
@@ -58,9 +75,14 @@ export function gatheringSystem(world: World, map: GameMap, rc: RuntimeConstants
     // Not yet gathering — check if at or adjacent to resource tile and idle
     if (movement.state !== 'idle') continue;
 
-    const resourceTile = map.resourceTiles.find(r => r.x === pos.x && r.y === pos.y)
+    const hasBerries = (tile: { x: number; y: number; resourceType: string }) => {
+      if (tile.resourceType !== 'berries') return true;
+      const bush = map.getBerryBush(tile.x, tile.y);
+      return bush != null && bush.berryCount > 0;
+    };
+    const resourceTile = map.resourceTiles.find(r => r.x === pos.x && r.y === pos.y && hasBerries(r))
       ?? map.resourceTiles.find(r =>
-        Math.abs(r.x - pos.x) + Math.abs(r.y - pos.y) === 1 && !map.isWalkable(r.x, r.y)
+        Math.abs(r.x - pos.x) + Math.abs(r.y - pos.y) === 1 && !map.isWalkable(r.x, r.y) && hasBerries(r)
       );
     if (!resourceTile) continue;