Is there any way to provide multiple columns in RadTreeView with column headers? I know this can be achieved using RadTreeListView, but I dont want to use that as that doesn't support Hierarchical data template.
The RadTreeListView allows you to display items in a hierarchical structure using the HierarchyColumnIndex property. See the documentation for more details.
You can combine that feature with the ability to create your own templates in order to achieve the result you want.
Hopefully that helps.