diff --git a/pandas/core/arrays/datetimelike.py b/pandas/core/arrays/datetimelike.py
index 037e9dd06bb6e..24a7a4dfc6d25 100644
--- a/pandas/core/arrays/datetimelike.py
+++ b/pandas/core/arrays/datetimelike.py
@@ -2250,7 +2250,7 @@ def factorize(
     def _concat_same_type(
         cls,
         to_concat: Sequence[Self],
-        axis: AxisInt = 0,
+        axis: AxisInt = 1,
     ) -> Self:
         new_obj = super()._concat_same_type(to_concat, axis)