diff --git a/fs/ftpfs.py b/fs/ftpfs.py
index 86f0495..e1ab883 100644
--- a/fs/ftpfs.py
+++ b/fs/ftpfs.py
@@ -694,6 +694,48 @@ class FTPFS(FS):
             _meta["unicode_paths"] = "UTF8" in self.features
         return _meta
 
+    def getmodified(self, path):
+        # type: (Text) -> DateTime
+        """Get the modified time of a resource as a datetime object.
+        
+        Uses MDTM command when available for efficiency.
+        """
+        _path = self.validatepath(path)
+        with self._lock:
+            with ftp_errors(self, path=path):
+                response = self.ftp.sendcmd(str("MDTM ") + _encode(_path, self.ftp.encoding))
+        # MDTM response format: "YYYYMMDDHHMMSS[.ffffff]"
+        time_text = _decode(response, self.ftp.encoding).strip()
+        # Remove the MDTM prefix (first 4 chars)
+        if time_text.startswith("213 "):
+            time_text = time_text[4:]
+        elif time_text.startswith("213"):
+            time_text = time_text[3:]
+        # Parse the timestamp
+        try:
+            # Handle potential microseconds
+            if "." in time_text:
+                main_part, frac_part = time_text.split(".", 1)
+                frac_part = frac_part.ljust(6, "0")[:6]  # Pad/truncate to 6 digits
+                time_text = main_part + frac_part
+            
+            tm_year = int(time_text[0:4])
+            tm_month = int(time_text[4:6])
+            tm_day = int(time_text[6:8])
+            tm_hour = int(time_text[8:10])
+            tm_min = int(time_text[10:12])
+            tm_sec = int(time_text[12:14])
+            tm_usec = int(time_text[14:20]) if len(time_text) > 14 else 0
+        except ValueError:
+            # Fallback to getting info if MDTM fails
+            info = self.getinfo(path, namespaces=("basic", "details"))
+            return info.modified
+        
+        # Convert to datetime object
+        dt = datetime.datetime(tm_year, tm_month, tm_day, tm_hour, tm_min, tm_sec, tm_usec)
+        # FTP times are typically in UTC
+        return dt.replace(tzinfo=datetime.timezone.utc)
+
     def listdir(self, path):
         # type: (Text) -> List[Text]
         _path = self.validatepath(path)