Indian Summer Black-Eyed Susan
Rudbeckia hirta ‘Indian Summer’Indian Summer Black-Eyed Susan, Rudbeckia hirta, is a selection of Maryland’s state flower known for its exceptionally large blooms. Golden yellow daisies 6–9 inches across, single or semidouble, surround a dark brown center cone. The flowers sit on stiff, branching stems above a clump of rough, hairy green leaves, and plants typically reach 2–3 feet tall and about 2 feet wide without staking.
Flowering begins in early summer and continues until frost, so one planting carries color from June well into fall. Butterflies and bees visit the flowers, and American goldfinches pick seed from the cones when some are left standing in autumn. Its long stems make it a dependable cut flower, and it suits sunny borders, cottage gardens, meadow plantings and pollinator beds.
Full sun gives the most flowers and the sturdiest stems. Plants grow in clay, loam or sandy soil as long as it drains well, and once established they handle heat, poor soil and dry spells, though regular watering keeps the blooms coming. Deer usually leave it alone. Plants may come back for one to a few seasons, and seedlings from dropped seed often appear nearby to carry the planting on. A few simple steps keep it flowering.
Care Instructions:
Planting: Plant in spring or early fall in full sun, setting the crown at soil level in a spot that drains quickly after heavy rain.
Soil: Grows in clay, loam or sandy soil with good drainage; heavily amended, rich soil is not necessary.
Watering: Water deeply once or twice a week through the first season, then during dry spells; established plants tolerate short droughts but bloom best with regular moisture.
Fertilizing: Feed lightly in spring with a balanced slow-release fertilizer, especially in poor soil, to support a long season of large flowers.
Pruning: Deadhead faded flowers through summer to keep new buds forming, leave some late seed heads for goldfinches and reseeding, and cut stems back in late fall or early spring.
Spacing: Space plants approximately 18–24 inches apart; the clumps will meet and form a continuous drift of gold.
Maintenance: Water at the base and keep air moving around the plants to limit powdery mildew, and replace plants that fail to return or let a few self-sown seedlings take their place.
Gardeners choose Indian Summer for flowers up to 9 inches across and months of bright gold from a native plant that asks for little. It performs best in hot, sunny beds, meadow plantings and cutting gardens, where the big blooms read from a distance and combine well with coneflower, ornamental grasses, salvia and asters.
Landscape Solutions:
- Flowers 6–9 inches across carry color across a yard, making it useful at the back of a border or along a fence seen from a distance.
- Heat and drought tolerance once established suit hot, sunny beds that get little irrigation.
- Deer usually pass it by, so it holds up in gardens with regular deer pressure.
- Self-sown seedlings help a meadow or wildflower planting keep filling in as the original plants decline.
- Long-stemmed blooms from summer to frost keep a cutting garden supplied with fresh flowers for months.
