Grandiflora Black-Eyed Susan

Grandiflora Black-Eyed Susan (Rudbeckia grandiflora)

Grandiflora Black-Eyed Susan (Rudbeckia grandiflora), also known as large coneflower, is a robust, native perennial known for its tall stature, large golden-yellow blooms, and resilience in naturalized landscapes. This summer bloomer adds bold color, airy texture, and an ecological focal point to meadows, prairies, and pollinator gardens.

Distinctive Features

'Grandiflora' produces towering stems that bear large, daisy-like golden-yellow flowers with distinctive dark brown central cones from midsummer through early fall. Its bold, upright habit and long-lasting blooms make it a standout in naturalized plantings. The nectar-rich flowers attract bees, butterflies, and other pollinators, while the seed heads provide food for birds later in the season. Its coarse-textured, deep green foliage is highly resistant to drought and browsing animals, making it an excellent low-maintenance choice for wildflower meadows and open landscapes.

Growing Conditions

• Sun Exposure: Full sun; requires at least 6 hours of direct sunlight daily.
• Soil: Prefers well-drained, moderately fertile soil but adapts to poor or dry conditions.
• Water: Requires moderate watering; drought-tolerant once established.
• Humidity: Tolerates a range of humidity levels.
• USDA Hardiness Zones: 4-9, adaptable to a variety of temperate climates.

Ideal Uses

• Pollinator Gardens: Attracts bees, butterflies, and beneficial insects with nectar-rich blooms.
• Bird Gardens: Seed heads provide food for birds in fall and winter.
• Naturalized Plantings: Ideal for meadows, prairies, and wildflower landscapes.
• Cut Flower Gardens: Large, long-lasting blooms are excellent for fresh arrangements.
• Back-of-Border Plantings: Tall stature adds structure and height to garden borders.

Low Maintenance Care

Grandiflora Black-Eyed Susan is a hardy, low-maintenance perennial that thrives with minimal care once established.

• Watering: Water regularly during establishment; drought-tolerant once mature.
• Pruning: Deadhead spent flowers to encourage prolonged blooming and maintain tidy growth.
• Fertilizing: Minimal fertilization is required; apply compost in early spring if desired.
• Pest and Disease Resistance: Resistant to deer, rabbits, and most common pests.
• Winter Care: Leave seed heads for winter interest and wildlife food; cut back dead foliage in early spring.

Why Choose Grandiflora Black-Eyed Susan?

Grandiflora Black-Eyed Susan offers bold, tall blooms, pollinator support, and reliable performance, making it an excellent choice for large-scale naturalized landscapes.

• Large, Golden-Yellow Blooms: Provides bold color and height from midsummer through early fall.
• Wildlife Support: Attracts pollinators and provides seeds for birds.
• Drought Tolerant: Thrives with minimal watering once established.
• Low Maintenance: Adapts to a variety of soils and conditions with little care.
• Deer Resistant: Foliage is unappealing to browsing animals.

For towering blooms, pollinator support, and reliable performance, Grandiflora Black-Eyed Susan (Rudbeckia grandiflora) is an exceptional focal point choice for naturalized and wildlife-friendly landscapes.