Black eyed Susans are native plants in many states; naturalized in most all the rest and parts of Canada. Biennial, sometimes short lived perennial. In my garden they have a glorious show in June and July and die out in August. I pull them, leaving the seeds for birds and to reseed which they freely do. I start seeing plants during late winter, usually in the grassy paths but enough make the flower beds to make a show by June.
Rudbeckia hirta attracts pollinators and butterflies.
Most of the time the blooms are solid yellow with a single row of ray flowers. Did I mention they are a member of the Aster family?
I noticed these in the Upper Garden that have an extra little row of ray flowers.
Last year we had some with strappy ray flowers:
and some with a mahogany brushstroke:
I look forward to the ones that are different but I don't save seeds to try to 'improve' the lot.
Madagascar Periwinkles are coming up now where I pulled back the mulch and gently stirred the soil to encourage reseeders. Rudbeckia will be a big show of yellow for two months and then everything changes when I pull the Susans and Periwinkles take over in pink and purple in time for the purple haze of fall.