Hardy Ageratum

This is an Uh Oh moment
when you see just how far this creeping native has advanced through the garden.
But I would not be without this fantastic blue colour.

Here taking over the circle
with' Woodlander's Hardy' Bottlebrush(Callistmon)

 Eupatorium coelestinum (hardy ageratum/blue mist flower) can be controlled somewhat by pulling up the roots, that are quite distinctly white, throughout the year.