Black-Eyed Susans (Rudbeckia hirta) are favorites among new gardeners- they are prolific and very easy to grow. They are a favorite to pollinators like bees and butterflies. Black-eyed Susans have a biennial (2 year) life cycle, but often self seed, acting more like perennials once established.
No pre-treatment required. Sow seed at 1/4 inch depth. Do not let seedling dry out while it is establishing.