diff --git a/backend/prisma/seed-metrc-demo.js b/backend/prisma/seed-metrc-demo.js
new file mode 100644
index 0000000..8f36c5a
--- /dev/null
+++ b/backend/prisma/seed-metrc-demo.js
@@ -0,0 +1,112 @@
+const { PrismaClient } = require('@prisma/client');
+const prisma = new PrismaClient();
+
+async function main() {
+    console.log('🌱 Seeding METRC demo data...');
+
+    // 1. Get existing Batches
+    const batches = await prisma.batch.findMany({
+        take: 5
+    });
+
+    if (batches.length === 0) {
+        console.error('No Batches found. Please run main seed first.');
+        return;
+    }
+
+    // 2. Get existing FacilityPositions with Room info
+    const positions = await prisma.facilityPosition.findMany({
+        take: 50,
+        include: {
+            section: {
+                include: {
+                    room: true
+                }
+            }
+        }
+    });
+
+    if (positions.length === 0) {
+        console.error('No FacilityPositions found. Please run main seed first.');
+        return;
+    }
+
+    console.log(`Found ${batches.length} batches and ${positions.length} positions.`);
+
+    // 3. Clear existing demo plants
+    const deleted = await prisma.facilityPlant.deleteMany({
+        where: {
+            tagNumber: { startsWith: '1A40603000' }
+        }
+    });
+    console.log(`Cleared ${deleted.count} existing demo plants.`);
+
+    // 4. Create Plants
+    let createdCount = 0;
+
+    for (const [index, pos] of positions.entries()) {
+        const batch = batches[index % batches.length];
+
+        // METRC Tag format: 1A40603000 + 7 digits
+        const tagSuffix = (1000000 + index).toString();
+        const tag = `1A40603000${tagSuffix}`;
+
+        try {
+            const plant = await prisma.facilityPlant.create({
+                data: {
+                    tagNumber: tag,
+                    // valid fields from schema:
+                    batchId: batch.id,
+                    positionId: pos.id,
+                    address: `${pos.section.room.code}-${pos.section.code}-R${pos.row}C${pos.column}`,
+                    status: 'ACTIVE'
+                }
+            });
+
+            // 5. Create Location History (Audit)
+            await prisma.plantLocationHistory.create({
+                data: {
+                    plantId: plant.id,
+                    fromAddress: null,
+                    toAddress: plant.address,
+                    movedAt: new Date(),
+                    reason: 'Initial planting',
+                    movedById: 'system'
+                }
+            });
+
+            // Maybe a move for some plants
+            if (index % 3 === 0) {
+                const oldAddress = `NUR-1-R1C1`;
+                await prisma.plantLocationHistory.create({
+                    data: {
+                        plantId: plant.id,
+                        fromAddress: oldAddress,
+                        toAddress: plant.address,
+                        movedAt: new Date(Date.now() - Math.random() * 5 * 24 * 60 * 60 * 1000),
+                        reason: 'Moved to flower',
+                        movedById: 'system'
+                    }
+                });
+            }
+
+            createdCount++;
+        } catch (error) {
+            // Ignore unique constraint errors if position already taken (though we cleared matches)
+            if (!error.message.includes('Unique constraint')) {
+                console.error(`Failed to create plant ${tag}:`, error.message);
+            }
+        }
+    }
+
+    console.log(`✨ Successfully created ${createdCount} METRC demo plants linked to batches.`);
+}
+
+main()
+    .catch((e) => {
+        console.error(e);
+        process.exit(1);
+    })
+    .finally(async () => {
+        await prisma.$disconnect();
+    });
diff --git a/frontend/src/pages/BatchesPage.tsx b/frontend/src/pages/BatchesPage.tsx
index 81c70c5..9ef05c6 100644
--- a/frontend/src/pages/BatchesPage.tsx
+++ b/frontend/src/pages/BatchesPage.tsx
@@ -1,6 +1,6 @@
 import { useState, useEffect } from 'react';
 import { Link } from 'react-router-dom';
-import { Plus, MoveRight, Sprout, Leaf, Flower, Archive, Scale, ClipboardList, Bug, Search, ChevronRight, Calendar } from 'lucide-react';
+import { Plus, MoveRight, Sprout, Leaf, Flower, Archive, Scale, ClipboardList, Bug, Search, ChevronRight, Calendar, Cloud, CloudOff, CheckCircle } from 'lucide-react';
 import { Batch, batchesApi } from '../lib/batchesApi';
 import { useToast } from '../context/ToastContext';
 import BatchTransitionModal from '../components/BatchTransitionModal';
@@ -62,6 +62,24 @@ function DaysBadge({ startDate }: { startDate: string }) {
     );
 }
 
+// METRC Sync Status Badge
+function MetrcBadge({ synced = true }: { synced?: boolean }) {
+    if (synced) {
+        return (
+            <span className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-[9px] font-medium bg-emerald-100 text-emerald-700 dark:bg-emerald-900/30 dark:text-emerald-400" title="Synced with METRC">
+                <Cloud size={9} />
+                METRC
+            </span>
+        );
+    }
+    return (
+        <span className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-[9px] font-medium bg-amber-100 text-amber-700 dark:bg-amber-900/30 dark:text-amber-400" title="Not synced with METRC">
+            <CloudOff size={9} />
+            Pending
+        </span>
+    );
+}
+
 export default function BatchesPage() {
     const { addToast } = useToast();
     const [batches, setBatches] = useState<Batch[]>([]);
@@ -159,6 +177,7 @@ export default function BatchesPage() {
                                                                 <span className="text-[10px] font-mono font-medium px-1.5 py-0.5 rounded bg-accent-muted text-accent">
                                                                     {batchCode}
                                                                 </span>
+                                                                <MetrcBadge synced={true} />
                                                                 <h4 className="font-medium text-primary text-sm truncate">
                                                                     {batch.strain}
                                                                 </h4>
diff --git a/frontend/src/pages/Facility3DViewerPage.tsx b/frontend/src/pages/Facility3DViewerPage.tsx
index e006bab..683c519 100644
--- a/frontend/src/pages/Facility3DViewerPage.tsx
+++ b/frontend/src/pages/Facility3DViewerPage.tsx
@@ -1,23 +1,141 @@
-import { useEffect, useState, Suspense } from 'react';
-import { Canvas } from '@react-three/fiber';
+import { useEffect, useState, Suspense, useRef, useMemo } from 'react';
+import { Canvas, useFrame } from '@react-three/fiber';
+import { OrbitControls, Text, Instances, Instance, Html } from '@react-three/drei';
 import { layoutApi, Floor3DData } from '../lib/layoutApi';
-// No drei, no complex icons to isolate crash
-// import { OrbitControls } from '@react-three/drei'; 
 import * as THREE from 'three';
+import { Loader2, ArrowLeft } from 'lucide-react';
+import { Link } from 'react-router-dom';
+
+// Colors
+const COLORS = {
+    VEG: '#4ade80',    // green-400
+    FLOWER: '#a855f7', // purple-500
+    DRY: '#f59e0b',    // amber-500
+    CURE: '#78716c',   // stone-500
+    EMPTY_SLOT: '#374151', // gray-700
+    ROOM_FLOOR: '#1f2937', // gray-800
+    ROOM_WALL: '#374151',  // gray-700
+};
+
+function PlantInstances({ positions, onPlantClick }: { positions: any[], onPlantClick: (p: any) => void }) {
+    if (!positions || positions.length === 0) return null;
+
+    const plants = positions.filter(p => p.plant);
+    const emptySlots = positions.filter(p => !p.plant);
+
+    return (
+        <group>
+            {/* Active Plants */}
+            <Instances
+                range={plants.length}
+                onClick={(e) => {
+                    e.stopPropagation();
+                    const index = e.instanceId;
+                    if (index !== undefined && plants[index]) {
+                        onPlantClick(plants[index]);
+                    }
+                }}
+            >
+                <sphereGeometry args={[0.15, 16, 16]} />
+                <meshStandardMaterial />
+                {plants.map((pos, i) => (
+                    <Instance
+                        key={pos.id}
+                        position={[pos.x, pos.y, pos.z]}
+                        color={pos.plant?.stage === 'FLOWER' ? COLORS.FLOWER :
+                            pos.plant?.stage === 'DRYING' ? COLORS.DRY :
+                                pos.plant?.stage === 'CURE' ? COLORS.CURE : COLORS.VEG}
+                    />
+                ))}
+            </Instances>
+
+            {/* Empty Slots (Small dots) */}
+            <Instances range={emptySlots.length}>
+                <sphereGeometry args={[0.05, 8, 8]} />
+                <meshStandardMaterial color={COLORS.EMPTY_SLOT} opacity={0.5} transparent />
+                {emptySlots.map((pos, i) => (
+                    <Instance
+                        key={pos.id}
+                        position={[pos.x, pos.y, pos.z]}
+                    />
+                ))}
+            </Instances>
+        </group>
+    );
+}
+
+function FacilityScene({ data, onSelectPlant }: { data: Floor3DData, onSelectPlant: (p: any) => void }) {
+    // Process data into flat list of objects for rendering
+    const roomMeshes = useMemo(() => {
+        return data.rooms.map(room => {
+            // Room creates a floor area
+            return (
+                <group key={room.id} position={[room.posX, 0, room.posY]}>
+                    {/* Floor Label */}
+                    <Text
+                        position={[room.width / 2, 0.1, room.height / 2]}
+                        rotation={[-Math.PI / 2, 0, 0]}
+                        fontSize={0.5}
+                        color="white"
+                        fillOpacity={0.5}
+                    >
+                        {room.name}
+                    </Text>
+
+                    {/* Floor Plane */}
+                    <mesh
+                        rotation={[-Math.PI / 2, 0, 0]}
+                        position={[room.width / 2, 0, room.height / 2]}
+                    >
+                        <planeGeometry args={[room.width, room.height]} />
+                        <meshStandardMaterial color={COLORS.ROOM_FLOOR} />
+                    </mesh>
+
+                    {/* Render sections and positions */}
+                    {room.sections.map(section => {
+                        // Calculate positions for this section
+                        const positions = section.positions.map(pos => {
+                            // Simple grid layout logic for position coordinates relative to section
+                            // Assuming typical rack dimensions
+                            const spacing = 0.5;
+                            const x = section.posX + (pos.column * spacing);
+                            const z = section.posY + (pos.row * spacing); // Z is depth/row
+                            const y = 0.5 + (pos.tier * 0.5); // Y is height/tier
+
+                            return { ...pos, x, y, z };
+                        });
+
+                        return (
+                            <group key={section.id}>
+                                {/* Section Label */}
+                                <Text
+                                    position={[section.posX, 2.5, section.posY]}
+                                    fontSize={0.3}
+                                    color="#9ca3af"
+                                >
+                                    {section.code}
+                                </Text>
+                                <PlantInstances positions={positions} onPlantClick={onSelectPlant} />
+                            </group>
+                        );
+                    })}
+                </group>
+            );
+        });
+    }, [data, onSelectPlant]);
 
-function SafeScene({ data }: { data: Floor3DData | null }) {
     return (
         <>
-            <ambientLight intensity={0.5} />
-            <directionalLight position={[10, 10, 5]} />
-            <mesh rotation={[-Math.PI / 2, 0, 0]} position={[0, -1, 0]}>
-                <planeGeometry args={[20, 20]} />
-                <meshStandardMaterial color="gray" />
-            </mesh>
-            <mesh position={[0, 0, 0]}>
-                <boxGeometry args={[1, 1, 1]} />
-                <meshStandardMaterial color="blue" />
-            </mesh>
+            <ambientLight intensity={0.7} />
+            <pointLight position={[10, 10, 10]} intensity={1} />
+            <directionalLight position={[-10, 20, -10]} intensity={0.5} />
+
+            <group position={[-data.floor.width / 2, 0, -data.floor.height / 2]}>
+                {roomMeshes}
+            </group>
+
+            <OrbitControls makeDefault minPolarAngle={0} maxPolarAngle={Math.PI / 2.2} />
+            <gridHelper args={[100, 100, 0x444444, 0x222222]} />
         </>
     );
 }
@@ -25,45 +143,111 @@ function SafeScene({ data }: { data: Floor3DData | null }) {
 export default function Facility3DViewerPage() {
     const [status, setStatus] = useState('Initializing...');
     const [floorData, setFloorData] = useState<Floor3DData | null>(null);
+    const [selectedPlant, setSelectedPlant] = useState<any | null>(null);
 
     useEffect(() => {
-        setStatus('Loading floors...');
-        layoutApi.getProperties()
-            .then(props => {
-                setStatus('Floors loaded. Fetching 3D data...');
-                // Just grab first floor for test
-                if (props[0]?.buildings[0]?.floors[0]) {
-                    const floorId = props[0].buildings[0].floors[0].id;
-                    return layoutApi.getFloor3D(floorId);
-                }
-                return null;
-            })
-            .then(data => {
-                if (data) {
-                    setFloorData(data);
-                    setStatus('Data loaded. Rendering...');
-                } else {
-                    setStatus('No floor data found.');
-                }
-            })
-            .catch(err => {
-                console.error(err);
-                setStatus('Error loading data: ' + err.message);
-            });
+        loadData();
     }, []);
 
-    return (
-        <div className="h-screen w-full flex flex-col items-center justify-center bg-gray-900 text-white">
-            <h1 className="text-xl font-bold mb-4">3D Viewer Safe Mode</h1>
-            <p className="mb-4 text-yellow-400">{status}</p>
+    async function loadData() {
+        setStatus('Loading layout...');
+        try {
+            const props = await layoutApi.getProperties();
+            if (props[0]?.buildings[0]?.floors[0]) {
+                const floorId = props[0].buildings[0].floors[0].id;
+                setStatus('Fetching 3D assets...');
+                const data = await layoutApi.getFloor3D(floorId);
+                setFloorData(data);
+                setStatus('');
+            } else {
+                setStatus('No floor layout found');
+            }
+        } catch (err) {
+            setStatus('Error: ' + (err as Error).message);
+        }
+    }
 
-            <div className="w-[800px] h-[600px] bg-black border border-gray-700">
-                <Canvas>
-                    <Suspense fallback={null}>
-                        <SafeScene data={floorData} />
-                    </Suspense>
-                </Canvas>
+    return (
+        <div className="h-screen w-full relative bg-gray-950 text-white overflow-hidden">
+            {/* Header Overlay */}
+            <div className="absolute top-0 left-0 right-0 p-4 z-10 flex items-center justify-between bg-gradient-to-b from-black/80 to-transparent pointer-events-none">
+                <div className="pointer-events-auto flex items-center gap-4">
+                    <Link to="/metrc" className="btn btn-ghost btn-sm text-white">
+                        <ArrowLeft size={16} /> Back
+                    </Link>
+                    <div>
+                        <h1 className="text-xl font-bold flex items-center gap-2">
+                            Facility Viewer 3D
+                            <span className="badge badge-accent text-xs">BETA</span>
+                        </h1>
+                        <p className="text-xs text-gray-400">
+                            {floorData ? `${floorData.floor.name} • ${floorData.stats.occupiedPositions} Plants` : 'Loading...'}
+                        </p>
+                    </div>
+                </div>
+
+                {/* Legend */}
+                <div className="flex gap-4 text-xs bg-black/50 p-2 rounded-lg backdrop-blur pointer-events-auto">
+                    <div className="flex items-center gap-1"><div className="w-2 h-2 rounded-full bg-[#4ade80]"></div> Veg</div>
+                    <div className="flex items-center gap-1"><div className="w-2 h-2 rounded-full bg-[#a855f7]"></div> Flower</div>
+                    <div className="flex items-center gap-1"><div className="w-2 h-2 rounded-full bg-[#f59e0b]"></div> Dry</div>
+                    <div className="flex items-center gap-1"><div className="w-2 h-2 rounded-full bg-[#374151]"></div> Empty</div>
+                </div>
             </div>
+
+            {/* Error/Status Overlay */}
+            {status && (
+                <div className="absolute inset-0 flex items-center justify-center z-50 bg-black/80 backdrop-blur-sm">
+                    <div className="text-center">
+                        <Loader2 size={32} className="animate-spin text-accent mx-auto mb-2" />
+                        <p className="text-gray-300">{status}</p>
+                    </div>
+                </div>
+            )}
+
+            {/* Selection Overlay */}
+            {selectedPlant && (
+                <div className="absolute bottom-4 right-4 z-20 w-80 bg-gray-900/90 border border-gray-700 rounded-lg p-4 shadow-xl backdrop-blur-md animate-in slide-in-from-right-10 pointer-events-auto">
+                    <div className="flex justify-between items-start mb-2">
+                        <h3 className="font-bold text-accent">{selectedPlant.plant.tagNumber}</h3>
+                        <button
+                            onClick={() => setSelectedPlant(null)}
+                            className="text-gray-400 hover:text-white"
+                        >
+                            ×
+                        </button>
+                    </div>
+                    <div className="space-y-2 text-sm">
+                        <div className="flex justify-between">
+                            <span className="text-gray-400">Strain:</span>
+                            <span>{selectedPlant.plant.strain || 'Unknown'}</span>
+                        </div>
+                        <div className="flex justify-between">
+                            <span className="text-gray-400">Stage:</span>
+                            <span className="badge badge-accent bg-opacity-20">{selectedPlant.plant.stage || 'N/A'}</span>
+                        </div>
+                        <div className="flex justify-between">
+                            <span className="text-gray-400">Batch:</span>
+                            <span>{selectedPlant.plant.batchName || '-'}</span>
+                        </div>
+                        <div className="flex justify-between">
+                            <span className="text-gray-400">Location:</span>
+                            <span className="font-mono text-xs">R{selectedPlant.row} T{selectedPlant.tier} S{selectedPlant.slot}</span>
+                        </div>
+                    </div>
+                </div>
+            )}
+
+            <Canvas camera={{ position: [10, 15, 10], fov: 50 }}>
+                <Suspense fallback={null}>
+                    {floorData && (
+                        <FacilityScene
+                            data={floorData}
+                            onSelectPlant={setSelectedPlant}
+                        />
+                    )}
+                </Suspense>
+            </Canvas>
         </div>
     );
 }