Alaskan Ginseng can be elusive for Red Dead Online players but there is one location that spawns enough of the plant to complete the daily challenge in one go.
Alaskan Ginseng spawns are fairly rare in Red Ded Online and you can mostly find them in northern territories where it's cold but still not entirely covered in snow.
The location in this guide is in Ambarino, north of Valentine and west of Wapiti Indian Reservation, with either of them being a good starting point due to the fast travel posts not being too far away from the place.
That said, if you are looking for health tonic components, you would be better off finding American Ginseng which is much more widespread and serves the same purpose. The Alaskan version is usually only sought after for the challenge.