Rudbeckia hirta Seeds | Black-eyed Susan
LATIN NAME: Rudbeckia hirta
COMMON NAME: Black-Eyed Susan
Plant Profile
Black-Eyed Susan (Rudbeckia hirta) is a rough-hairy biennial or short-lived perennial of the daisy family (Asteraceae), native to the meadows and open woods of North America. It grows 30-100 cm tall, bearing golden-yellow daisy flowers with a dark brown central cone from midsummer into autumn. Tough, long-flowering and beloved of bees and butterflies, it is a cornerstone of prairie-style planting.
Science & Biotechnology
Like other members of the Rudbeckia group, Rudbeckia hirta draws steady attention from botanists and plant breeders, who value the genus both as a subject of research and as a source of garden-worthy material. Its designation as official state flower of Maryland has also made it a subject of interest in regional horticultural and cultural history research. From a research perspective, species of this kind are valuable material for work on propagation and on the selection of uniform lines.
Uses & Benefits
Gardeners value Black-Eyed Susan for its ornamental character, and the plant also fits naturally into herb, vegetable and cutting gardens. Black-eyed Susan is an enormously popular, low-maintenance ornamental for sunny borders and native meadow plantings, valued for its long summer-to-autumn flowering season, genuine wildlife value for pollinators, and reliable self-seeding once established. Its toughness and adaptability across a wide range of soil conditions have made it a staple of both formal gardens and informal wildflower plantings across North America and well beyond. Thereafter it wants only the ordinary attentions any garden plant receives.
Black-eyed Susans are the golden backbone of prairie borders and pollinator plantings, long-blooming and bird-feeding through autumn.
Growing from Seed
Sow fresh seed of Black-Eyed Susan under ordinary good conditions. Sow seed onto surface of a loose, well-drained mix without covering it deeply, since light supports germination, and keep it consistently moist. Full sun suits this hardy native well, and once established it typically self-seeds readily, often naturalising into a reliable, low-maintenance colony over successive seasons. Sow the seeds evenly over the surface and cover lightly in a loose, well-drained seed compost, keep the sowing evenly moist, and give the pot or tray full sun. Move strong seedlings into individual pots, keep them in good light, and set them out when the weather and their size agree.
Our Take
Black-Eyed Susan earns its space through character rather than fuss. Part of this plant’s appeal is the long practical history summarized above. Minor errors in timing or watering rarely cost the grower the crop.
Related Reading
Gardeners who grow Black-Eyed Susan often pair it with these related subjects: