Plants form a beautiful low clump of large powdery-blue leaves, then tall stems of drooping yellow brown-eyed daisies rise above in mid-summer. Seed are eaten by goldfinches and other small birds. Right on cue during the dog days of August, black-eyed Susans (Rudbeckia) illuminate flower gardens and open fields everywhere like bright rays of sunshine.If any plant could be the poster child of late summer it would be this one. In late spring through early summer, the flower stalks of Rudbeckia maxima can rise to over 7 feet tall. Plant number: 1.455.500 This species is a native wildflower from the Southern USA. For the best seed germination, plant when the soil temperature has warmed to about 70° F. Where to plant: Rudbeckia will thrive in just about any sunny location that has well-drained soil. I should add that these plants were totally untouched by … The research into whether the abundance of motor oil in these sites is actually essential for plant growth has been inconclusive. Rudbeckia maxima is an overlooked drought-tolerant native that can be found from Arkansas to Texas, growing in seasonally moist roadside ditches alongside old tires, beer cans, and cigarette butts. They will tolerate drought better than they will soggy ground. Rudbeckia maxima is an overlooked impact plant. Rudbeckia hirta Rustic Dwarfs Shorter variety with a mix of flowers from yellow to rich mahogany. Self-Seeding. These great coneflower seeds for sale grow unique plants with very large, bluish-green leaves and yellow daisy-like flowers. Rudbeckia maxima was discovered by English botanist and plant explorer Thomas Nuttall (1786-1859) in 1816 near the Red River in Oklahoma Territory. Rudbeckia Maxima (rud-BEK-ee-a, MAKS-ih-muh) is an upright flowering plant and a member of the Asteraceae family (Aster family). Rudbeckia maxima is an overlooked drought-tolerant native that can be found from Arkansas to Texas, growing in seasonally moist roadside ditches alongside old tires, beer cans, and cigarette butts. Great Coneflower is also rhizomatous, so it can form colonies and spread slowly. R. maxima - R. maxima is a robust, upright, clump-forming, herbaceous perennial with large, broadly ovate, blue-green leaves and, in summer, erect stems bearing yellow flowers with drooping petals surrounding a dark brown, elongated, central cone. Black-eyed Susans self-seed if the flower centers are left on the stems after the petals fall. Sowing Directly in the Garden: In mild climates, sow seeds outdoors at any time of the year. Remove the chaff from the seeds by hand and place seeds in an airtight food storage bag or seed packet. sullivantii "Goldsturm" is the standard for Rudbeckia. Wildflower, Prairie planting, Low Maintenance, Flower Arranging, Cottage/Informal, Beds and borders, Wildlife. (2 feet tall) Rudbeckia hirta "Cherokee Sunset" has double and semi-double flowers in shades of yellow, orange, red, bronze and mahogany. At the top of each stalk are large, wide, brown-green centered, yellow daisies. Seeds will settle to the bottom of the bag. Tall and bold. Rudbeckia maxima (Large coneflower) will reach a height of 2.2m and a spread of 1m after 2-5 years. Rudbeckia seeds are deep brown or black and appear like small splinters. Rudbeckia maxima was discovered by English botanist and plant explorer Thomas Nuttall (1786-1859) in 1816 near the Red River in Oklahoma Territory. Perennials. Label the bag with a permanent marker and store the seeds in a cool dark area until planting time in spring. sullivantii Goldsturm Deep yellow petals with an orange tint surrounding a purple-brown centre. It is short-lived but re-seeds itself. Rudbeckia fulgida var. Now that I've seen the result, I'm scattering several more in a naturalistic, random pattern. The flower resembles a brown-eyed susan, but the petals of the flower hang down and the center is much taller. Try R. maxima … Suggested uses. These plants are native to the southern United States and are found growing in moist and sunny locations such as pastures, meadows, and fields. Another name for Great Coneflower is Cabbage Leaf Coneflower due to the blueish green leaves that have a waxy texture. Annual rudbeckias are rewarding plants to grow from seed. Cultivation. Incredible wildflower. Plant database entry for Large Coneflower (Rudbeckia maxima) with 38 images, 2 comments, and 32 data details. Prefers fertile, moist soil in full sun but tolerates poor soil, dry conditions, and light shade. Planted in a large group, it makes a … Towards the end of the season you can leave the plant standing so Goldfinches can enjoy the seeds. Rudbeckia maxima Coneflower From moist pine woods and similar of the south eastern USA comes this large and attractive plant to gain attention from the back of your border. Because of the difficult growing conditions - I'm planting within the matrix of native plants - I only planted two Rudbeckia maxima. The genus name "Rudbeckia" of Rudbeckia maxima honors a family of renowned scientists and professors, the Rudbecks of Sweden, who taught Carl Linnaeus at … The foliage is quite striking because of the steely blue color and waxy sheen.