First year flowering perennial seed

[Porseb]

Am I too late to try and plant some perennial seeds to flower later this year?

If not, what perennial seed would you recommend? I have huge swathes to fill and seeds are probably the most cost effective option.

Already have wildflower patch.

Thanks

Dahlia seed will flower and then form a big tuber which you can keep in the pot and it will come back year after year :)

A lot of annual seeds will reseed themselves, such as Marigolds, Nigellas, Californian Poppy, Cosmos and Candytuft. You could scatter some and get late summer flowers.
In between you could sow forget me nots, sweet Williams and foxgloves To flower next year.

Nasturtiums also drop their seeds so reappear the next year. Give good coverage.

Thank you