Hello, I planted a mulberry tree last year (its about 3-4 metres tall now) and in a circular bed which up till now I've kept almost free of weeds. The bed is about 2 metres diam. I would like to plant something that could provide some ground cover in the bed, as long as it doesn't compete with the Mulberry. Perhaps some herbs with lavender edges. Any advice or plant suggestions would be great.

many thanks

jay jay