diff --git a/frontend/app/(sidebar)/layout.tsx b/frontend/app/(sidebar)/layout.tsx
index 3e79b13..98a524b 100644
--- a/frontend/app/(sidebar)/layout.tsx
+++ b/frontend/app/(sidebar)/layout.tsx
@@ -7,6 +7,7 @@ import { SidebarInset, SidebarProvider, SidebarTrigger } from "@/components/ui/s
 import DynamicBreadcrumb from "./dynamic-breadcrumb";
 import { extractRoute } from "@/lib/utils";
 import { usePathname } from "next/navigation";
+import { Toaster } from "@/components/ui/sonner";
 
 export default function AppLayout({
   children,
@@ -29,6 +30,7 @@ export default function AppLayout({
           </div>
         </header>
         {children}
+        <Toaster />
       </SidebarInset>
     </SidebarProvider>
   );
diff --git a/frontend/app/(sidebar)/setup/page.tsx b/frontend/app/(sidebar)/setup/page.tsx
index 271cb64..4febef6 100644
--- a/frontend/app/(sidebar)/setup/page.tsx
+++ b/frontend/app/(sidebar)/setup/page.tsx
@@ -10,6 +10,8 @@ import {
 } from "@/schemas/application.schema";
 import { z } from "zod";
 import { Button } from "@/components/ui/button";
+import { toast } from "sonner";
+
 
 type PlantingSchema = z.infer<typeof plantingDetailsFormSchema>;
 type HarvestSchema = z.infer<typeof harvestDetailsFormSchema>;
@@ -34,11 +36,27 @@ export default function SetupPage() {
 
   const handleNext = () => {
     if (step === 1 && !plantingDetails) {
-      alert("Please complete the Planting Details before proceeding.");
+          toast.warning(
+            "Please complete the Planting Details before proceeding.",
+            {
+              action: {
+                label: "Close",
+                onClick: () => toast.dismiss(),
+              },
+            }
+          );
       return;
     }
     if (step === 2 && !harvestDetails) {
-      alert("Please complete the Harvest Details before proceeding.");
+          toast.warning(
+            "Please complete the Harvest Details before proceeding.",
+            {
+              action: {
+                label: "Close",
+                onClick: () => toast.dismiss(),
+              },
+            }
+          );
       return;
     }
     setStep((prev) => prev + 1);
@@ -50,7 +68,12 @@ export default function SetupPage() {
 
   const handleSubmit = () => {
     if (!mapData) {
-      alert("Please select an area on the map before submitting.");
+          toast.warning("Please select an area on the map before submitting.", {
+            action: {
+              label: "Close",
+              onClick: () => toast.dismiss(),
+            },
+          });
       return;
     }
 
diff --git a/frontend/components/ui/sonner.tsx b/frontend/components/ui/sonner.tsx
new file mode 100644
index 0000000..452f4d9
--- /dev/null
+++ b/frontend/components/ui/sonner.tsx
@@ -0,0 +1,31 @@
+"use client"
+
+import { useTheme } from "next-themes"
+import { Toaster as Sonner } from "sonner"
+
+type ToasterProps = React.ComponentProps<typeof Sonner>
+
+const Toaster = ({ ...props }: ToasterProps) => {
+  const { theme = "system" } = useTheme()
+
+  return (
+    <Sonner
+      theme={theme as ToasterProps["theme"]}
+      className="toaster group"
+      toastOptions={{
+        classNames: {
+          toast:
+            "group toast group-[.toaster]:bg-background group-[.toaster]:text-foreground group-[.toaster]:border-border group-[.toaster]:shadow-lg",
+          description: "group-[.toast]:text-muted-foreground",
+          actionButton:
+            "group-[.toast]:bg-primary group-[.toast]:text-primary-foreground",
+          cancelButton:
+            "group-[.toast]:bg-muted group-[.toast]:text-muted-foreground",
+        },
+      }}
+      {...props}
+    />
+  )
+}
+
+export { Toaster }
diff --git a/frontend/package.json b/frontend/package.json
index 4da49cc..13595d5 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -40,12 +40,13 @@
     "lucide-react": "^0.475.0",
     "next": "15.1.0",
     "next-auth": "^4.24.11",
-    "next-themes": "^0.4.4",
+    "next-themes": "^0.4.6",
     "react": "^19.0.0",
     "react-day-picker": "8.10.1",
     "react-dom": "^19.0.0",
     "react-hook-form": "^7.54.2",
     "recharts": "^2.15.1",
+    "sonner": "^2.0.1",
     "tailwind-merge": "^3.0.1",
     "tailwindcss-animate": "^1.0.7",
     "zod": "^3.24.2"
diff --git a/frontend/pnpm-lock.yaml b/frontend/pnpm-lock.yaml
index 7635441..cd38842 100644
--- a/frontend/pnpm-lock.yaml
+++ b/frontend/pnpm-lock.yaml
@@ -1,9 +1,5 @@
 lockfileVersion: '6.0'
 
-settings:
-  autoInstallPeers: true
-  excludeLinksFromLockfile: false
-
 dependencies:
   '@hookform/resolvers':
     specifier: ^4.0.0
@@ -99,7 +95,7 @@ dependencies:
     specifier: ^4.24.11
     version: 4.24.11(next@15.1.0)(react-dom@19.0.0)(react@19.0.0)
   next-themes:
-    specifier: ^0.4.4
+    specifier: ^0.4.6
     version: 0.4.6(react-dom@19.0.0)(react@19.0.0)
   react:
     specifier: ^19.0.0
@@ -116,6 +112,9 @@ dependencies:
   recharts:
     specifier: ^2.15.1
     version: 2.15.1(react-dom@19.0.0)(react@19.0.0)
+  sonner:
+    specifier: ^2.0.1
+    version: 2.0.1(react-dom@19.0.0)(react@19.0.0)
   tailwind-merge:
     specifier: ^3.0.1
     version: 3.0.2
@@ -4334,6 +4333,16 @@ packages:
     dev: false
     optional: true
 
+  /sonner@2.0.1(react-dom@19.0.0)(react@19.0.0):
+    resolution: {integrity: sha512-FRBphaehZ5tLdLcQ8g2WOIRE+Y7BCfWi5Zyd8bCvBjiW8TxxAyoWZIxS661Yz6TGPqFQ4VLzOF89WEYhfynSFQ==}
+    peerDependencies:
+      react: ^18.0.0 || ^19.0.0 || ^19.0.0-rc
+      react-dom: ^18.0.0 || ^19.0.0 || ^19.0.0-rc
+    dependencies:
+      react: 19.0.0
+      react-dom: 19.0.0(react@19.0.0)
+    dev: false
+
   /source-map-js@1.2.1:
     resolution: {integrity: sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==}
     engines: {node: '>=0.10.0'}
@@ -4834,3 +4843,7 @@ packages:
   /zod@3.24.2:
     resolution: {integrity: sha512-lY7CDW43ECgW9u1TcT3IoXHflywfVqDYze4waEz812jR/bZ8FHDsl7pFQoSZTz5N+2NqRXs8GBwnAwo3ZNxqhQ==}
     dev: false
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false