Planting suggestions for shallow soil over concrete

[Reluctantadult]

I'm working on a flowing hedge next to my driveway. It's got a cherry, forsythia, spirea, and other things mixed in. It's not huge. I have a decent space in the corner by the house, and was going to plant a flowing shrub but when I started to dig, it's actually really shallow soil depth before concrete, too shallow to plant a shrub. And now I'm not sure what to do. My best idea is something from seed, like aquilegia but my sister said they have a deep tap root so not exactly that. Would really appreciate any suggestions! I need to cover the bare soil or bindweed will take over.

Erigeron grows anywhere in my experience
Vinca is good for ground cover

Do you know how far out the concrete goes. Is it possible to find a tree/shrub that has a spread that is equal to or greater than the concrete.
Alternatively, you could use a concrete-breaker to make a planting pocket but that's a bit risky unless you know what is/isn't under the concrete (water pipes, electrical conduits, etc).

The spot is right by the gas meter and where the Internet comes into the house so I definitely won't be breaking up the concrete!

There's some periwinkle in the hedgerow already so that could be a good shout. It's a pretty sunny spot though.

Creeping thyme or chamomile.

I have a similar area and things that have thrived include herbs such as oregano, chives, thyme. Strawberries do well. Forget me nots. Also crocosmia which has become quite invasive but I find easy to dig out as the bulbs are so shallow.

https://www.bethchatto.co.uk/garden-nursery/gallery/scree-garden.htm

these guys!

Lots of beautiful plants to choose from.

I’ve got concrete under some of my garden and I grow perennial geraniums, scabious, muehlenbeckia, amongst other things. Some trailing ground cover would work well like Campanula.