love the coneflower seeds.
A few coneflowers have reseeded in the garden this year for the first time.
Bird photos by Father Time
Others that reseed readily in my garden are:
four o'clocks, and
Madagascar periwinkle/Catharanthus roseus.
Need more color?
The New Guinea impatiens I bought never did much until recently. I had them in a large mixed container. I took them out, planted them in homemade compost, fertilized, and kept them watered.