diff --git a/packages/reflex-base/src/reflex_base/compiler/templates.py b/packages/reflex-base/src/reflex_base/compiler/templates.py
index ca94aa2c482..22adab11daa 100644
--- a/packages/reflex-base/src/reflex_base/compiler/templates.py
+++ b/packages/reflex-base/src/reflex_base/compiler/templates.py
@@ -139,6 +139,7 @@ def rxconfig_template(app_name: str):
     plugins=[
         rx.plugins.SitemapPlugin(),
         rx.plugins.TailwindV4Plugin(),
+        rx.plugins.RadixThemesPlugin(),
     ]
 )"""
 
diff --git a/tests/units/utils/test_utils.py b/tests/units/utils/test_utils.py
index 4c60761e62e..8278a35e6bc 100644
--- a/tests/units/utils/test_utils.py
+++ b/tests/units/utils/test_utils.py
@@ -14,6 +14,7 @@
 from reflex_base.vars.base import Var
 
 from reflex.environment import environment
+from reflex.plugins import RadixThemesPlugin
 from reflex.state import BaseState
 from reflex.utils import exec as utils_exec
 from reflex.utils import frontend_skeleton, js_runtimes, prerequisites, templates, types
@@ -361,6 +362,11 @@ def test_create_config_e2e(tmp_working_dir):
     exec((tmp_working_dir / constants.Config.FILE).read_text(), eval_globals)
     config = eval_globals["config"]
     assert config.app_name == app_name
+    # The default template must declare RadixThemesPlugin explicitly. The blank
+    # app renders Radix Themes components, so without an explicit plugin the
+    # compiler falls back to implicit enablement and emits a deprecation warning
+    # on the first `reflex run` of a freshly scaffolded app (issue #6483).
+    assert any(isinstance(plugin, RadixThemesPlugin) for plugin in config.plugins)
 
 
 class DataFrame: