Veronica (Hebe) chathamica

Chatham Island koromiko. Low-growing, spreading and charming evergreen shrub native to New Zealand's Chatham Islands. Glossy green leaves with clusters of violet-purple and white flowers from summer into autumn. Hardy and salt-tolerant. Great in containers or for forming an informal edge to a garden. I have seen one behind a low rock wall on a sloped garden - lovely. 80cm or more scrambley.

Paul Bell-Butler, CC BY 4.0 , via Wikimedia Commons

In situ, Chathams: Tim Park, CC BY-SA 4.0 , via Wikimedia Commons