It is recommended for zones 4 to 9. If you cultivate your Rudbeckia maxima plant outdoors in your garden, then make sure to keep it in direct sunlight. Planted in a large group, it makes a nice visual impact. The average temperature required by the giant brown-eyed Susan is 40° degrees Fahrenheit (4° C). The bright flowers with their tall cones shoot up high above the foliage in late summer. Rudbeckia maxima, (Clothiers database, suggestions are most often for stored dry seed), Sow 68ºF, if no germination in 3-4 wks, move pot to 39ºF for 2-4 wks, bring back to warm The blooms attract a variety of butterflies including monarchs and swallowtails, as well as birds, such as goldfinches. Try to add increase watering and place them in a sunny location. Drought tolerant in its native range, it needs regular water in central California. After the blooms go to seed, it will attract songbirds including goldfinches. Here is more about our approach. Seed are eaten by goldfinches and other small birds. . Houseplant Supplies; Fresh Cut Greens and Accessories; Gifts; Holiday Gifts; Pots & Ornaments; Tools & Supplies. It’s easy to care for and its flowers attract gorgeous butterflies! Rudbeckia triloba ’s many common names include Brown-Eyed Susan, Branched Coneflower, Thin-Leaved Coneflower and Three-Lobed Coneflower. Eliminate all hiding spots such as fallen foliage. Q. We're always looking to improve our articles to help you become an even better gardener. Its huge silvery blue foliage sets it off against other natives. The bright flowers with their tall cones shoot up high above the foliage in late summer. Make sure your soil is not too wet and shaded since that type of soil is an ideal hiding spot for such pests. These plants are native to the southern United States and are found growing in moist and sunny locations such as pastures, meadows, and fields. They are spindly, so plant a group of them. Rudbeckia maxima Golda Emanis aka Golda Emanis Cabbage-leaf Black-Eyed Susan. The flowers that resemble Black-Eyed Susans are a vital source of pollen for our native bees. A Southern U.S. native with huge (up to two feet) blue-green leaves that clasp the stems. Add to Basket. Rudbeckia hirta. The late season seed heads attract finches and other birds. 13 years ago. The tall, yellow daisies and blue-green foliage of great coneflower add impressive beauty to the summer garden. We leave ours to stand until the fall so birds can take the seeds. Rudbeckia maxima. HOW TO GROW. The species is a short-lived perennial that will self-seed and works well in naturalized areas. It is not very drought tolerant. Details. I really like mine too. – It is a member of the Aster family. Rudbeckia maxima. Prefers full sun in a moist, well-drained site. Inset: Honey bee. Rudbeckia maxima (Great Coneflower) Bright yellow petals, large brown centre cone, pale green foliage, blooms early to mid summer, moderate growth rate, 5-7 ft tall x 3-4 ft wide, full sun . I ask about selfseeding since in their native ranges they grow along the roads and I was affraid it might be somewhat invasive in a more hospitable environment. Rudbeckia is a popular genus with home gardeners, and the Rudbeckia hirta and maxima species have long been garden staples. Apr 30, 2017 - Rudbeckia maxima is also known as Giant Coneflower or Cabbage Leaf Coneflower. Great Coneflower (Rudbeckia maxima) Native to a small area of eastern Texas, northwest Louisiana, southwest Arkansas and southeast Oklahoma This is perhaps the most unusual Rudbeckia you’ll find. In June-July stately stems hold 3" yellow-orange flowers with large, dark-brown, cone-like centers. Rudbeckia Maxima - Common name:Dumbo's Ears - Great Rudbeckia Dumbo's Ears. The plant’s dark green basal leaves are slightly hairy and are divided into three oval parts, hence the species name. It can also grow in mostly sunny locations such as lightly shaded areas of your garden. Rudbeckia maxima is an overlooked impact plant. It is native to center of the United States ranging into the Coastal Southeast. – Likes moist, slightly acidic, fertile soil in full sun to part sun. It has stunning big blue leaves and a strong set of stalks that reach up to 6 feet tall and can take any wind. While you're here, why not follow us on Facebook and YouTube? The large yellow flowers have a whimsical look and make excellent cut flowers or even a good choice for a children’s garden or fairy garden.Rudbeckia maxima is species native to the Southern United States. It grows easily in average soils in full sun, but can be grown in partial shade and a variety of soils. Habit Clump-forming. bluish gray leaves form a mound to 23 feet tall and wide. QTY. Tall and bold. Well-named since it may grow to 9' tall in the wild, but typically grows 3-4' tall in cultivation. This giant coneflower will attain heights of 6-7'! 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. The research into whether the abundance of motor oil in these sites is actually essential for plant growth has been inconclusive. How do I encourage more flowers to bloom on my great coneflower plant? The seed cones often persist through winters and attract goldfinches to your garden! Plant Details; Care & Info; Add to wishlist ; This eye catching native perennial forms a beautiful low clump of large powdery-blue leaves, then tall stems of drooping yellow brown-eyed daisies in mid-summer. Here a picture of mine, George. After flowering birds love to eat the seeds. These showy flowers are great for drier spots in your garden. Giant Coneflower's native range occurs in east Texas, parts of Louisiana, southern Arkansas and a few counties in southeast Oklahoma, its northern-most limit. Like; Save; triciae. rudbeckia hirta. It gets its name from the very tall flower stalks that emerge in late spring through summer, much like succulents that send out tall flower stalks. Overwatering will still cause rot and decay, so be sure not to drown the soil – an average or medium amount of water is fine. Minimum temperature ranges (in degrees C) are shown in brackets . R. maxima is an eye-catching perennial native to Arkansas, Louisiana and into Texas. Insects, Diseases, and Other Plant Problems: Fairly trouble-free plant. This Rudbeckia species is native only to the southern states of Arkansas, Oklahoma, Louisiana, and Texas, but has been introduced into Missouri. Rudbeckia maxima fills a niche where tall flowers are concerned—this native wildflower can attain heights of 7 feet in the garden. This article contains incorrect information, This article is missing information that I need. The status in the other 4 states remains Not Ranked/Under Review.. This species is a native wildflower from the Southern USA. USDA Hardiness Zone: 4a - 9b : USDA Hardiness Ref. Honey and native bees are attracted to another small flower, Tall Wine cup. Pale coneflower in a roadside native prairie. The basal leaves are up to 24" long, and are unique within the genus thus making the species unmistakeable. They are suitable for mixed borders, meadows, native gardens, open woods, and large annual displays. The basal leaves are up to 24" long, and are unique within the genus thus making the species unmistakeable. PERSONALISE THIS ITEM (+2.95) SUBSCRIBE. After blooms go to seed, leave the flowers stalks and goldfinches and other small birds will feed on the seeds. see more; Family Asteraceae . It forms attractive clumps or heads of foliage low to the ground; individual leaves are "paddle-shaped," 18" long and 3" to 4" wide. They are suitable for mixed borders, meadows, native gardens, open woods, and large annual displays. Giant Coneflower: USDA Zone: 4-9: Plant number: 1.455.500. Find Large Coneflower Rudbeckia maxima also know as Cabbage Leaf Coneflower in St Louis Missouri at Sugar Creek Gardens Plant Nursery. ©J.S. – Likes moist, slightly acidic, fertile soil in full sun to part sun. Rudbeckia maxima, commonly called large coneflower, features a basal clump of huge, glaucous, paddle-shaped, bluish-green leaves (to 24” long and 10” wide) from which rise in summer sturdy, sparsely-leaved flower stalks to 7’ tall bearing yellow-rayed coneflowers (to 3” across). Some of these may be affiliate links, meaning we earn a small commission if items are purchased. TRIVIA: Flowers attract native bees and butterflies. – Native range is from Quebec to Montana, south to Florida and Arizona. They're about 5' tall now & in bud. Giant Coneflower - Rudbeckia maxima. It is probably due to a lack of sunlight and moisture. This plant supports Wavy-lined Emerald (Synchlora aerata) larvae. At the top of each stalk are large, wide, brown-green centered, yellow daisies. Rudbeckia maxima, or Large Coneflower, is a herbaceous perennial in the daisy family that is easily grown in average, moist, well-drained soils in full sun. Rudbeckia maxima. Rudbeckia laciniata is affectionately known as the “Out House Plant”. The bloom time of these native wildflowers is from late spring to early summer and the bloom color is golden yellow. More Info » Next Product » Rudbeckia maxima. A. Fill the hole with more soil and pat it to even out the surface. £17.99 Save 10%. A Southern U.S. native with huge (up to two feet) blue-green leaves that clasp the stems. These are fantastic companion plants, as the tall flower stalks and gorgeous yellow flowers combine well with other tall Rudbeckia varieties like Rudbeckia Irish Eyes and Rudbeckia laciniata. Water the plant till the soil is moist. All ratings refer to the UK growing conditions unless otherwise stated. Pot Size. It gets its name from the very tall flower stalks that emerge in late spring through summer, much like succulents that send out tall flower stalks. A wonderful wildflower, Rudbeckia maxima belongs to the plant family of Asteraceae. Description Reviews FAQ Questions. Plants are available in … Simply dig up the entire plant, split it, pick out any weeds or grass, and then re-plant it where you want. Rudbeckia is a popular genus with home gardeners, and the Rudbeckia hirta and maxima species have long been garden staples. The species are commonly called coneflowers and black-eyed-susans; all are native to North America and many species are cultivated in gardens for their showy yellow or gold flower heads. Rudbeckia hirta, the common wildflower which is also known as the black-eyed Susan, has been used for medicinal purposes for hundreds of years.Certain Native American tribes used the flower in the 1800s for medicinal treatments. Check other web resources for Rudbeckia maxima Nutt.. Flora of North America: Collaborative Floristic Effort of North American Botanists ; PLANTS: USDA-NRCS Database of Plants of the United States and its Territories ; BONAP North American Plant Atlas of the Biota of North America Program: ; TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden Whether you’re growing these for their color, size, drought resistant characteristics, or simply as a cut flower for your gardens…let’s learn how to properly grow and care for it. 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 University of Uppsula. Every. Great coneflower plants can be fairly drought tolerant, but they grow taller and bloom much quicker in moist conditions. These plants multiply from rhizomes via self-seeding and form vast colonies that cover a large surface area. You can also grow them around your house as protectors for other plants. Powdery mildew is a fungal disease that your great coneflower plant can contract. Your plant will thrive if you happen to live in USDA Plant Hardiness Zones ranging from 5 to 9. Cooperative Extension prohibits discrimination and harassment on the basis of race, color, national origin, age, sex (including pregnancy), disability, religion, sexual orientation, gender identity, and veteran status. The central cones of Rudbeckia Maxima are … – Native range is from Quebec to Montana, south to Florida and Arizona. Q. Purple coneflower (Echinacea purpurea), is a hardy perennial wildflower that adapts easily to a range of growing conditions, including periods of heat and drought. The foliage looks great, too, with its prominent bluish-green leaves, which give this plant the alternate nickname of "cabbage flower." Bright yellow, brown cone, leaves covered with bristly hairs, moderate growth rate, blooms early summer to early fall, full sun to partial shade, 2-3 ft tall x 2-3 ft wide. Zone: Zone 5: Exposure: Full Sun: Moisture: Moderate to Consistent Moisture: Native to: Native « Previous Product. Plant lovers residing in these USDA zones should consider the plantation of these lively native plants of North America. It prefers average soil with good drainage, and is excellent in native or wild plantings. Grown for its large yellow coneflowers, it is equally recognisable for its large blue-green cabbage like basal leaves. The giant coneflower blooms in mid summer in my Arkansas garden. Rudbeckia laciniata (Cutleaf Coneflower) – Hardy in zones 3 to 9. Guidelines To Follow, Great coneflower, giant coneflower, large coneflower, cabbage leaf coneflower, Tolerant of a wide range from sandy to clay. Scientifically known as Rudbeckia maxima, these plants have striking waxy green-blue leaves that appear in rosettes. 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. Make a hole at least 8-10″ deep in the soil under full sun. However, too much shade will thwart the growth of your Rudbeckia and prevent it from flowering. Endangered List- Rudbeckia missouriensis is native to only 6 states- Illinois, Missouri, Arkansas, Louisiana, Oklahoma and Texas according to Natureserve.Within this limited range, it is reported as Imperiled in Lousiana and Critically Imperiled in Illinois. Giant Coneflower: USDA Zone: 4-9: Plant number: 1.455.500. The flower resembles a brown-eyed susan, but the petals of the flower hang down and the center is much taller. They have a bluish cast to them, and become smaller as they alternate up the plant's central stems. Giant coneflower is a stunning native perennial wildflower. Home » Rudbeckia Maxima Care: Growing Giant Coneflowers. Flower Color is Yellow/Gold and blooms in Summer. The foliage is quite striking because of the steely blue color and waxy sheen. Hardiness ratings. The leaves at the base are also attractive, as they are bluish and form a basal clump right at the bottom of the plant. Hi, I'm Kevin. He’s also a big fan of the black-eyed Susan’s big brother, Rudbeckia maxima, a towering daisy that will take a range of soil conditions, including wetness. It is an easy-going plant that tolerates light shade, heat, some drought, nighttime visits from deer, and a wide range of soils. A. $ 0.00. Rudbeckia maxima great coneflower Sold by 31 nurseries. These showy flowers are great for drier spots in your garden. May 31, 2018 - Rudbeckia is a plant genus in the sunflower family. Cabbageleaf Coneflower, Dumbo's Ears, Great Coneflower . Rudbeckia maxima. Tools; For the Birds; How to Pickup Your Order; 2021 Plant Preview. In the summer flower stalks shoot up that are sparsely leaved, and have 2-3 daisy like blooms. You can fertilize your plant by using a water soluble feed. Whatever soil the plant grows in, make sure it is well-drained. Rudbeckia fulgida NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to form a strategic partnership called N.C. Uproot your plant from its original pot without damaging the roots and place it in the center of the hole. Hardiness zone 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b. Grows in Sun. See … You can also apply a good quality fungicide if the problem is too severe. In late spring through early summer, the flower stalks of Rudbeckia maxima can rise to over 7 feet tall. ... Rudbeckia Maxima grows well in a wide range of soils – sandy, clay, or loamy soil. 13 years ago. That will give the roots several weeks to fully form and adjust in their new soil. Purple Coneflower Facts. Brown eyed Susan (Rudbeckia maxima) is species native to the Southern United States. Rudbeckia: Species: maxima: Category: Perennials: Origin: South-Central United States of America. You can also divide them every 4 years in spring. Hardiness. Why are my maxima rudbeckia not growing tall? Rudbeckia laciniata (Cutleaf Coneflower) – Hardy in zones 3 to 9. Native « Previous Product. Description. Even though the soil is heavy clay, and very wet throughout winter and spring, Rudbeckia maxima came through with flying colors, grew significantly in size in one season, and remains attractive, with unblemished leaved of large size. Rudbeckia maxima, with its oversized, paddle-like foliage, looks like a plant that was lost in time and belongs in a world when giant creatures ruled. Out of the clumps of bluish-green leaves, tall architectural flower stems shoot up to the sky like rockets in mid to late summer and explode into rays of golden yellow. June 13, 2002. To prevent such pests from attacking your plant, keep your garden tidy. Rudbeckia maxima is a drama queen in the garden. You need to protect your Rudbeckia maxima plant from snails and slugs. The large (1 ft by 2 ft) leaves and 6 to 7 foot height make a striking appearance in the garden. The leaves grow more upright, which gives the plant a different look than other Rudbeckia species. So, make sure to place your plant in direct sunlight and ensure proper spacing to increase airflow. Blue basal leaves give rise to sturdy flower stalks that can reach 6- 7 feet tall. Huge basal leaves of powder blue with giant stalks rise straight up bearing deep golden coneflowers. This is where the genetics of the plants we offer began, making them the hardiest possible. Exceptionally showy and easy to grow, Rudbeckia hirta has a prolonged bloom time that attracts butterflies and other pollinators. NOTIFY ME WHEN BACK IN STOCK. They can attack your plants and leave huge holes in the foliage and even eat the seedlings of your plant. Join the RHS ... Plant range S North America Characteristics . It prefers average soil with good drainage, and is excellent in native or wild plantings. The bright yellow flowers have a dark black center and are a great addition to compliment native plantings. This is cabbage-leaved coneflower, Rudbeckia maxima, which is native to central and southern parts of the US. Smooth glaucous covering and large basal paddle-shaped leaves with slender long petioles can reach 2' long and 10" wide. Clump of silvery blue-green foliage that resembles a cabbage or collard green leaf. The Plants Database includes the following 3 subspecies of Rudbeckia triloba .Click below on a thumbnail map or name for subspecies profiles. Plant Common Name. Grow it in a moist, sunny site. Feed your great coneflower once every two weeks in the summer blooming season (June). ... in a range of yellow, orange, red, bronze, and mahogany. These great coneflower seeds for sale grow unique plants with very large, bluish-green leaves and yellow daisy-like flowers. Giant coneflower plant needs lots of sunlight to thrive. Also, make sure to plant it under full sun and keep it in moist soil. This plant can grow up to 7 feet tall. Rudbeckia laciniata. Yes, the best time to divide it is in spring. Giant coneflowers (Rudbeckia maxima) in June attract a full range … Rudbeckia maxima. The chocolate brown seed heads persist into early winter. White Flower Farm is a family-owned mail-order nursery located in northwestern Connecticut. The Cherokee, for example, used the cheerful-looking flower to ease urinary tract infections and earaches as well as for gynecological issues. Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours), 4a, 4b, 5b, 5a, 6b, 6a, 7b, 7a, 8a, 8b, 9b, 9a. Foliage Deciduous. Indian paintbrush blooms in April and is attractive to bees and hummingbirds. It should get at least 6 hours of full sun exposure every day to thrive and grow to its tallest height. Since 1950 we have been providing a wide range of perennials, annuals, bulbs, shrubs, vines, amaryllis, gardening tools & supplies, and gifts for gardeners. Rudbeckia maxima , Upper, glaucous leaf. Français. – In full sun it will require more moisture. Usage Requirements. Giant coneflower is a stunning native perennial wildflower. The central cone of the flower itself is be Rudbeckia maxima, or Large Coneflower, is a herbaceous perennial in the daisy family that is easily grown in average, moist, well-drained soils in full sun. CLICK & COLLECT AVAILABLE. Rudbeckia hirta: plants biennial or short-lived perennial, with basal tufts of leaves, and leaves basally disposed, decreasing in size upwards, the lower borne on evident petioles (vs. R. bicolor, with plants annual, lacking basal tufts of leaves, and leaves chiefly cauline, remaining relatively constant in size until near base of capitulescence, all sessile or subsessile). It is native to the states of Texas, Oklahoma, Louisiana and Arkansas with an adjunct population in South Carolina. However, your great coneflower plant will truly thrive and reach its tallest height in moist, organically-rich sandy or clay soils. Relocate your plant before new stem growth in spring. The flowers are up to 8cm across and have strong yellow petals with dark brown tall central cones. USDA NRCS National Plant Data Center (NPDC). NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to It blooms in mid-summer through mid-fall with large, 3 inch yellow flowers and black centers. speciosa), to 2 feet high and 2 feet wide, is native from New Jersey to Alabama and Georgia; it has bright orange-yellow petals surrounding a black cone. General Description. Powdery mildew can be a problem but healthy plants usually recover. Genus Rudbeckia may be annuals, biennials or rhizomatous herbaceous perennials, with simple or pinnately divided leaves and large daisy-like flower-heads with yellow or orange rays surrounding a prominent conical disk . The status in the other 4 states remains Not Ranked/Under Review.. Peterson. Great for cutting. So, make sure to plant it under full sun to see the beautiful yellow blooms of the plant. Details R. maxima is a tall herbaceous perennial producing a mound of large, smooth, blue-grey leaves. As an Amazon Associate, I earn from qualifying purchases. Epic Gardening occasionally links to goods or services offered by vendors to help you find the best products to care for plants. Giant coneflower (Rudbeckia maxima, Zones 4–9) Native range: Southeastern United States Size: Basal foliage up to 3 feet tall with flowers rising to 7 feet tall; 24 to 30 inches wide Culture: Full sun to very light shade; prefers consistent moisture but tolerates drought well. So, keep soil moisture relatively high during the growing season. It is an easy-going plant that tolerates light shade, heat, some drought, nighttime visits from deer, and a wide range of soils. Here is a link that might be useful: Rudbeckia Maxima. Its native range extends from New York to Minnesota and south to Utah and Texas. The plant has about 5′ stems that sprout attractive blooms with bright yellow daisy-like petals that surround a big elongated bright brown cone made of seed heads. The species name "amplexicaulis" means "stem-clasping," in reference to the growth of the leaves. Each flower is about 3 inches with drooping rays and a 2 to 6 inch dark brown central cone. It will harm the leaves of your plant and turn them yellow. Stems are self-supporting and seldom need to be staked. The flower resembles a brown-eyed susan, but the petals of the flower hang down and the center is much taller. If you want more blooms, cut the spent flowers as that will encourage new growth. This is a great architectural plant that tolerates dry or boggy soil and is very attractive to butterflies. RUDBECKIA maxima. Rudbeckia maxima is native to Arkansas, Oklahoma and Louisiana. Bright yellow flowers appear between August and September. Perennial. You can prune or deadhead your cabbage leaf coneflower so that new blooms appear during bloom time. Rudbeckia maxima. Endangered List- Rudbeckia missouriensis is native to only 6 states- Illinois, Missouri, Arkansas, Louisiana, Oklahoma and Texas according to Natureserve.Within this limited range, it is reported as Imperiled in Lousiana and Critically Imperiled in Illinois. Noteworthy CharacteristicsRudbeckias hail from the moist meadows and dappled woods of North America. This is a great architectural plant that tolerates dry or boggy soil and is very attractive to butterflies. 'Irish Eyes' Butterflies, birds, and bees will not miss these glowing yellow beacons on the 30-inch-tall … It also propagates itself through rhizomes. Be sure to prune off all affected areas. A stunning plant that produces flowers on stalks up to 180cm in height. A little more about me. speciosa), to 2 feet high and 2 feet wide, is native from New Jersey to Alabama and Georgia; it has bright orange-yellow petals surrounding a black cone. It can be grown from seed, but in ideal growing conditions, it will self-seed. This unique giant black-eyed Susan has a deciduous basal rosette of waxy blue foliage resembling a collard. Read our Commitment to Diversity | Read our Privacy Statement. American bumble bee. Susceptible to powdery mildew, slugs, and snails on young plants. Like; Save; 3dawgs. Large (to 5 inches.) Rudbeckia maxima, with its oversized, paddle-like foliage, looks like a plant that was lost in time and belongs in a world when giant creatures ruled. Rudbeckia laciniata, commonly called tall coneflower, is a Missouri native perennial which occurs in moist soils in rich woodlands, thickets or along streams, sloughs or other bodies of water. The foliage has cabbage-like blades which is why this plant is also known as cabbage leaf coneflower. We also offer gardening advice and how-to information to gardeners throughout the United States. Flowers attract butterflies. I created Epic Gardening to help teach 10,000,000 people how to grow anything, no matter where they live in the world. Noteworthy CharacteristicsRudbeckias hail from the moist meadows and dappled woods of North America. Plant it in along a border, in a cutting, pollinator, or cottage garden or in a meadow or naturalized area. Family Asteraceae, Subclass Asteridae. Origin: Native. Incredible wildflower. This perennial plant can actually tolerate a fairly wide range of soils – even flooded or drought inflicted soils for short periods of time. Preorder Plants; Gift Cards; The Soil Knife; Houseplants . 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 University of Uppsula. Its selection 'Viette's Little Suzy' is a dwarf to about 14 inches high and wide, with dark-eyed yellow blooms. Rudbeckia maxima: Family: Asteraceae: Zone: 5-9: Height & Spread: 5-7′ tall and 3-4′ wide: Light: Full sun: Soil: Tolerant of a wide range from sandy to clay: Water: Dry to medium: Pests & Diseases: Susceptible to powdery mildew, slugs, and snails on young plants. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. Rudbeckia maxima, otherwise known as the giant coneflower, is in the Asteracea family. A must in any cottage garden, giant coneflower tolerates a wide range of growing conditions in zones 4 to 9. 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. Easy to grow and very drought tolerant, this Rudbeckia tolerates heat, drought and a wide range of soils, but does not like poorly-drained, wet soils. – It is a member of the Aster family. ... rudbeckia maxima. This species is a native wildflower from the Southern USA. Rudbeckia maxima Great coneflower £ 6.70 | In Stock. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. Snails and slugs can injure young plants. Druse, Making More Plants" Rudbekia maxima, fresh seed, sow barely covered as some light may be beneficial to germination, 70F, germination in 5 - 21 days. Planted in a large group, it makes a nice visual impact. The soil moisture the plant tolerates is from well-moist to dry. The giant coneflower or great coneflower is a favorite amongst novice and seasoned gardeners. RHS Hardiness Zone: H3 - H7: RHS Hardiness Ref. Rudbeckia triloba is a species native all over the eastern North America. Lobelia Laxiflora Care: Growing Mexican Bush Lobelia, How Far Apart To Plant Potatoes? You can grow these plants in mass plantings on the edges of your water garden or in your wildlife garden. The flower stalks rise to 7 feet bearing intense yellow-rayed flowers. Outstanding in mass plantings in the back or center of the border or as a specimen plant. Great for cutting. The long stems provide excellent deer resistance. Canadian Hardiness Zone: 2a - 8a: Canada Hardiness Ref. form a strategic partnership called N.C. This plant can grow up to 7 feet tall. This plant has great presence. There are no cultivated varieties that I know of. This tall-growing perennial thrives well even in poor soil. United States, DC, Washington, USDA ARS National Arboretum. The USDA hardiness zone of Rudbeckia Maxima is from 5 to 9. Rudbeckia maxima. N.C. – In full sun it will require more moisture. Its huge silvery blue foliage sets it off against other natives. Rudbeckia maxima was discovered by English botanist and plant explorer Thomas Nuttall (1786-1859) in 1816 near the Red River in Oklahoma Territory. Tricia. 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. The research into whether the abundance of motor oil in these sites is actually essential for plant growth has been inconclusive. Rudbeckia maxima, otherwise known as the giant coneflower, is in the Asteracea family. Powdery-blue basal foliage can grow a whopping 18-24". They are 3" across, with yellow rays that droop slightly toward the ground around a prominant dark-brown center cone that can reach 2"-6" tall. Great Coneflower can also tolerate droughts and heat well. A.