What indestructible plant would you recommend for borders?

Post date: 2021-02-28 05:49:13

I'm doing some guerilla gardening on our housing estate, and there are some borders where I'd like to establish some plants that will gradually spread on their own and require no maintenance.

The borders in question are along a paved sidewalk next to a parking lot. There is no grounds maintenance so it always fills with weeds like grasses or thistles. I remove the weeds periodically, but I'd like to plant something that looks nicer, doesn't get too tall or messy, benefits insects, and can hold its own against weeds and neglect.

I'm considering campanula or mint. Creeping thyme would be nice but in my experience not hardy enough. Anything else I should consider?

This is in London, UK. The location is sunny and fairly dry.

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