diff --git a/frontend/src/components/layout-editor/TypeLibrary.tsx b/frontend/src/components/layout-editor/TypeLibrary.tsx
index 83dae86..b845a33 100644
--- a/frontend/src/components/layout-editor/TypeLibrary.tsx
+++ b/frontend/src/components/layout-editor/TypeLibrary.tsx
@@ -140,7 +140,7 @@ interface PlantTypeCardProps {
 
 function PlantTypeCard({ plantType, onDragStart }: PlantTypeCardProps) {
     const handleDragStart = (e: React.DragEvent) => {
-        e.dataTransfer.setData('application/json', JSON.stringify(plantType));
+        e.dataTransfer.setData('application/json', JSON.stringify({ ...plantType, type: 'PLANT_TYPE' }));
         e.dataTransfer.effectAllowed = 'copy';
         onDragStart(plantType);
     };
diff --git a/frontend/src/features/layout-designer/components/LayoutCanvas.tsx b/frontend/src/features/layout-designer/components/LayoutCanvas.tsx
index 051c6ae..1e9c3b5 100644
--- a/frontend/src/features/layout-designer/components/LayoutCanvas.tsx
+++ b/frontend/src/features/layout-designer/components/LayoutCanvas.tsx
@@ -234,6 +234,23 @@ export function LayoutCanvas() {
                     addToast(`Moved plant to ${result.newAddress}`, 'success');
                 }
             }
+            // Handle PLANT_TYPE placement (New Plants)
+            else if (parsed.type === 'PLANT_TYPE') {
+                const plantTypeId = parsed.id;
+                const plantTypeName = parsed.name || 'Plant';
+
+                if (col >= 1 && col <= targetSection.columns && row >= 1 && row <= targetSection.rows) {
+                    const position = targetSection.positions?.find(p => p.row === row && p.column === col);
+
+                    if (position && (position.status === 'EMPTY' || position.status === 'RESERVED')) {
+                        await layoutApi.occupyPosition(position.id, { plantTypeId });
+                        addToast(`Placed ${plantTypeName} at R${row}C${col}`, 'success');
+                    } else if (position?.status === 'PLANTED') {
+                        addToast('Slot already occupied', 'warning');
+                        return;
+                    }
+                }
+            }
             // Handle BATCH placement
             else if (parsed.type === 'BATCH') {
                 const batchId = parsed.id;