diff --git a/backend/scripts/import_graines.py b/backend/scripts/import_graines.py
index 2589343..b219c41 100644
--- a/backend/scripts/import_graines.py
+++ b/backend/scripts/import_graines.py
@@ -6,6 +6,7 @@ Usage: cd /chemin/projet && python3 backend/scripts/import_graines.py
 import json
 import shutil
 import sqlite3
+import unicodedata
 import uuid
 from datetime import datetime, timezone
 from pathlib import Path
@@ -86,6 +87,13 @@ def copy_image(src: Path, variety_id: int, conn: sqlite3.Connection) -> None:
     if not src.exists():
         print(f"  WARNING image absente: {src}")
         return
+    # Vérifier si cette image existe déjà dans media pour cette variété
+    existing_m = conn.execute(
+        "SELECT id FROM media WHERE entity_type = 'plant_variety' AND entity_id = ? AND url LIKE ?",
+        (variety_id, f"%{src.stem}%")
+    ).fetchone()
+    if existing_m:
+        return
     UPLOADS_DIR.mkdir(parents=True, exist_ok=True)
     # Use UUID-based filename like the rest of the app
     dest_name = f"{uuid.uuid4()}.jpg"
@@ -99,7 +107,6 @@ def copy_image(src: Path, variety_id: int, conn: sqlite3.Connection) -> None:
 
 def normalize(s: str) -> str:
     """Normalise string: minuscules, supprime accents simples."""
-    import unicodedata
     return ''.join(c for c in unicodedata.normalize('NFD', s.lower()) if unicodedata.category(c) != 'Mn')
 
 
@@ -169,6 +176,15 @@ def import_graines(conn: sqlite3.Connection) -> None:
                 (*updates.values(), plant_id),
             )
 
+        # Vérifier si cette variété existe déjà pour cette plante
+        existing_v = conn.execute(
+            "SELECT id FROM plant_variety WHERE plant_id = ? AND LOWER(variete) = LOWER(?)",
+            (plant_id, variete_name)
+        ).fetchone()
+        if existing_v:
+            print(f"  ↷ {nom_commun} — {variete_name} (déjà importé)")
+            continue
+
         # Créer plant_variety
         conn.execute(
             "INSERT INTO plant_variety (plant_id, variete, created_at) VALUES (?, ?, ?)",
@@ -229,6 +245,15 @@ def import_arbustre(conn: sqlite3.Connection) -> None:
         if exposition:
             conn.execute("UPDATE plant SET besoin_soleil = ? WHERE id = ?", (exposition, plant_id))
 
+        # Vérifier si cette variété existe déjà pour cette plante
+        existing_v = conn.execute(
+            "SELECT id FROM plant_variety WHERE plant_id = ? AND LOWER(variete) = LOWER(?)",
+            (plant_id, variete_name)
+        ).fetchone()
+        if existing_v:
+            print(f"  ↷ {nom_commun} — {variete_name} (déjà importé)")
+            continue
+
         conn.execute(
             "INSERT INTO plant_variety (plant_id, variete, created_at) VALUES (?, ?, ?)",
             (plant_id, variete_name, datetime.now(timezone.utc).isoformat()),