Is mid-June too late to plant anything?

[BettyBi0]

I've got landscapers finishing in a couple of weeks after a total garden strip out. They'll be leaving me with about 20m of raised beds around a lawn. I'm a total rookie so apologies for the stupid questions.

What seeds or plants could I put in at this late stage to get some summer colour and interest?

How can I quickly get them full so that they don't become full or weeds and grass or worse cat poo?

[MadSprocker]

That bed is east facing. But the back garden faces south.