Hardy Planting Zone – Zones 3 to 9
Bloom Season – June to September
Bloom Color – Yellow or orange florets with brown dome centers
Height at Maturity – 2 to 4 feet
Soil Type Preferred – moist, organically rich soil
Sun or Shade – Full sun
Rudbeckia Hirtas as makes a bright and beautiful addition to any summer flower display.
Sporting brilliant, daisy-like flowers about 3 inches across, this relatively fast-growing plant is stiffly stemmed and easily grown in various conditions. Flowers consist of bright yellow or occasionally orange florets surrounding a brown center dome. The flowers will typically mature mid-summer, and flowering can continue into mid-fall with proper care and deadheading. Fully mature plants typically grow 2' to 3' feet tall, although they can grow to be 4' tall plants in certain climates. Also known as a black-eyed Susan, this plant is a wildflower native to Missouri. In Missouri, it is found in prairies, woods, fields, roadsides, and many other open areas. The leaves are toothed, lance-shaped, and may have three or more lobes. The leaves and stems are covered in short, hair-like bristles that give the plant its species name, Hirta.
Rudbeckia Hirtas require little maintenance and are very tolerant of heat and a wide range of soil conditions, though they prefer moist, well-drained soils.
They are also generally drought or negligence-tolerant. These plants are freely self-seeding and will typically remain in the garden in future years. While they grow best in full sun, Rudbeckia hirtas can also handle partial shade. Problems with insects or diseases are rare in Rudbeckia Hirta, and deer are not interested in consuming this plant. Due to the stiff stems, this makes for a great cut flower and feeling at home in wild gardens, cottage gardens, borders, and annual beds.