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Deam’s Black Eyed Susan (Rudbeckia fulgida v. deamii) is an outstanding wildflower that blooms in mid-summer with a profusion of large, golden flower petals surrounding a black center cone. Easy to grow and vigorous, it is considered the best of the seed-grown coneflowers because of its toughness, huge quantities of flowers, and sturdy, upright habit. A wonderful plant for prairie gardens that offers food and habitat for pollinators and birds.
To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low
temperatures; the lower the zone number the colder the winter.
If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will
survive the winter temperatures in your area.
If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack
of freezing winter temperatures do not provide a time for winter dormancy (rest).
Deam’s Black Eyed Susan (Rudbeckia fulgida v. deamii), also known as Deam’s Coneflower, is an outstanding wildflower that blooms in mid-summer with a profusion of large, golden-orange flower petals surrounding a black center cone. Native to a few states in the Midwest (Illinois, Indiana, and Ohio), this perennial thrives in all soil types, including clay, and loves lots of sun. Deam’s Black Eyed Susan is vigorous and pest resistant. In the hot humid south, however, plants need good air circulation and occasional division to discourage foliar diseases. It has even been recognized by European gardeners, and received the Royal Horticultural Society’s prestigious Award of Garden Merit in 1993. Deadheading can extend the bloom time, but leave flowers standing to provide seed heads for songbirds. Native bees, butterflies, and other pollinators are attracted to the flowers. Other perennials that make good companions for Deam’s Coneflower include native ornamental grasses like Prairie Switchgrass (Panicum) and ‘Blonde Ambition’ Grama Grass, as well as Prairie Sage (Salvia azurea), and Poppy Mallow (Callirhoe).
Rudbeckia (Black-Eyed Susan) - a genus of North American wildflowers known for their showy yellow coneflowers. Most species are perennial, but Rudbeckia. hirta and all the showy cultivars are biennial, growing only leaves and stems the first season and blooming the following year.
Preferred growing conditions
Plant in most soil types including clay. Rudbeckia prefers to be planted in a full to partial sun locations.
Mulch with common mulching materials except of moisture climates where plants should remain un-mulched.
Irrigate regularly the first growing season to establish the plants. Black Eyed Susan likes dry to moderately moist soil conditions and should be given weekly supplemental irrigation in arid Western climates. Rainfall is generally sufficient in moister eastern climates.
Deadheading will help to keep the plants blooming longer into the late summer. But leave the last flush of flowers on the plants to set seeds
Fertilize lightly in the fall with a half and half blend of Yum Yum Mix and good quality compost.
Special comments
Seeds are enjoyed by seed eating songbirds. Plants with seed heads should be left standing over the winter months. Cut back hard in early to mid-spring. Biennial Rudbeckia hirta should be selectively cut back to remove dead foliage in mid-spring to prepare the plants for flowering later in summer.
Rudbeckia generally don't need to be divided.
View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
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As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat. The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.
Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service toll-free at (800) 925-9387 or contact us by email.
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 is an outstanding wildflower that blooms in mid-summer with a profusion of large, golden flower petals surrounding a black center cone. Easy to grow and vigorous, it is considered the best of the seed-grown coneflowers because of its toughness, huge quantities of flowers, and sturdy, upright habit. A wonderful plant for prairie gardens that offers food and habitat for pollinators and birds.)
