Rudbeckia can be started indoors, from seed, about 6-8 weeks before last expected frost. Chim Chiminee Rudbeckia. Make sure that the seed stipulated Hardy Perennial. En résumé, ce qu’il faut savoir : Nom : Rudbeckia Famille : Asteracées Type : Vivace ou annuel Hauteur : 30 à 80 cm Exposition : Ensoleillée Sol : Assez riche. £1.49 £ 1. Back to Flowers & Plants Garden Plants. Sidalcea seeds. Thrives in most soils in full sun. Plants produce mostly double blooms and some singles and semidoubles. An unusual, fresh cut flower. Planting Period. Transplant seedlings when large enough to handle into 7.5-10cm (3-4in) pots. Cherry Brandy Rudbeckia $ 1.75. Company Registration No. What is Hardy Perennial? £1.19. See more ideas about Black eyed susan, Plants, Perennials. It thrives in full sun and is drought-tolerant once established. Back to Flowers & Plants Garden Plants. Rudbeckia may be annuals, biennials or perennials, all of which are native to the meadowlands and woodlands of North America. Lines are currently open 9am-5pm, Monday to Friday.Our call centre capacity is currently reduced to ensure staff safety. Pick over any Mildew plants. Rudbeckia flowers prefer a sunny spot with rich, well-drained soil. £1.75 delivery. | My Account  Achetez Pinkdose RUDBECKIA -Kelvedon Star-"Gloriosa Daisy" 50+Perennial Seeds: Amazon.fr Livraison & retours gratuits possible (voir conditions) These bright, bushy plants have become one of our most popular garden flowers in recent years and it’s not surprising. A summer border with assorted Phlox, Rudbeckia, Monarda, Perovskia, and a friend.. PERENNIALS A-K can be found on the PERENNIAL Seed A-K page. 99. Enormous single and semi-double golden blossoms 6-9" across. Lasting displays, ideal for beds, borders, tubs … 1-800-396-9238 Retail Location Closure. Also known as blackeyed Susan and gloriosa daisy. Sow indoor, for surest results, 0.5cm(1.4in) deep, in trays of compost. More. Please turn it on so that you can experience the full capabilities of this site. Invest in the future of your garden by growing long-lived perennials. Rudbeckia flowers prefer a sunny spot with rich, well-drained soil. Water gently using a can with a soft rose. Seedheads have good winter interest. Diligent deadheading will prevent self seeding and will also encourage additional blooming. | View Basket  Set Descending Direction. Rudbeckia Perennial found in: Rudbeckia 'Summerina Collection', Rudbeckia fulgida 'Early Bird Gold', Rudbeckia fulgida 'Goldsturm', Rudbeckia 'All.. Loading... 0 Basket Account * Contact Help. Rudbeckia triloba is a species native all over the eastern North America. This site uses cookies to enable shopping cart usage, provide you with relevant product and promotions, and measure performance. Deadhead to avoid self-seeding. Plants make a bushy, upright clump with a profuse display of brown-eyed, golden-orange daisies from midsummer through the fall. Beginners should start with those perennial seeds that are easiest to start at home: black-eyed Susan (Rudbeckia), catmint (Nepeta), perennial geranium, centranthus, aster, purple coneflower (Echinacea), armeria, snow-in-summer (Cerastium), or yarrow (Achillea). Postage & Packing Bright golden-yellow petals surround dark brown centers. | Track My Order  PREMIER SEEDS DIRECT RUDBECKIA HIRTA - Black Eyed Susan - 2000 Finest Seeds. This is a sturdy first year flowering rudbeckia. Please be advised that our Thorold, ON retail store will be closed until further notice. Perennial varieties will germinate best if stratified after planting. One of the easiest, most reliable and productive cut flowers, Johnny's offers award-winning varieties with single or double petals in a range of colors and forms. About Us  Gradually accustom young plants to outside conditions (avoid frost), before planting out 30cm(1st) apart, when frosts are over.Or sow outdoors for ease, where they are to flower, 1.5cm (1.2in)) deep directly into finely prepared soil which has already been watered. Plant perennials in spring or autumn. Extremely versatile and members of the daisy family both bees and butterflies are strongly attracted to them.They begin flowering in the middle of summer, but really get into their stride later in the season and last well into autumn, often continuing after many other plants in the garden have finished. Autumn Forest Rudbeckia Seeds 6620 $ 1.99 – $ 25.00. BIENNIALS are offered on the Biennial Seed page. Home > Flowers, Plants & Shrubs > Flower Seeds > Perennial & Biennial Seeds. £3.99 £ 3. Harden off early-sown plants by growing on in cooler conditions for 10-15 days before planting out after all risk of frost, 60-90cm (2-3ft) apart. An elegant plant for attracting butterflies and hummingbirds. Rudbeckia (10) Series. Hardy Perennial. Rudbeckia. All half-hardy annual varieties and many of the perennial Rudbeckias can be obtained as seed. My impression is that this general rule applies to R. hirta. Taxonomy: Rudbeckia occidentalis Other Names: Coneflower, Western coneflower Seed Type: Perennial Sow Indoors or Outdoors: Unlike other varieties of rudbeckia that are broadcasted at the final frost like wildflowers, Green Wizard is best started indoors 8 – 10 weeks prior. The black-eyed Susan (Rudbeckia hirta) has a rich history as a native wildflower, popular first as a medicinal herb used by pre-colonial Native Americans and then finding its way into 19th century cultivated flowerbeds.. Flowers-Perennials; Flowers-Perennials. For late summer autumn colour in the garden this hardy rudbeckia is very hard to beat. A half-hardy perennial, best grown as a half hardy annual. Thin seedlings as required. Satisfaction Guarantee. Vegetable Seeds. Product ID: 1768. Jenny's Pearl Pink (Delphinium) Starting at CAD $290.75. Total. Flower Seed - Rudbeckia Hirta Rustic Dwarfs Mixed – Half - Hardy Annual – Coneflower, Easy to Grow - Summer Flowering, Perfect for Borders - 1 Packet (350 Seeds) by Thompson and Morgan £2.99 £ 2 . Jenny's Pearl Blue (Delphinium) Starting at CAD $15.60. AAS (All-America Selections) Winners. Seeds (10) Genus. View full-size image. Plants will die back in autumn - leave the stems over winter to provide hibernation spots for beneficial insects. Colour:Yellow. Many are also happy in containers and although some are grown perennially many are grown as bedding plants. Transplant seedlings 5cm(2in) apart to other trays when large enough to handle. With their masses of colourful blooms, ranging from shades of gold, bronze and mahogany, these half-hardy annuals have a long flowering period. The bright yellow flowers have a dark black center and are a great addition to compliment native plantings. Thompson & Morgan - Flowers - Rudbeckia Cherry Brandy - 50 Seed. Durable 'cone flowers' with bold centres. See more ideas about Seeds, Gloriosa daisy, Perennials. Sort By: Select products then . Generally, Rudbeckia will not flower until it’s second year after seed germination. 99 Once established, plants are virtually maintenance free. Water well until plants are established.Rudbeckias grow perfectly in positions in either full sun or light shade. Looking after your Rudbeckia Plants - Goldsturm. Rudbeckia seeds … We’re working hard to expand capacity and hope to be able to extend operating hours in the near future. Capable of withstanding outdoor winter temperatures down to -15C. Skip to Main Content Skip to Search Skip to Footer. Normal hours (8 AM - 5 PM EST) will resume Monday, 11/30. AIMADO Seeds-100 Pcs Rudbeckia Seed ‘Indian Summer’ Cut Flower Seed Drought Tolerant bee Friendly Flower Seeds Easy Grow for Garden £2.99. Rudbeckia hirta, commonly known as Coneflower or Black-eyed Susan, are a tough and sturdy perennial that blooms for long periods. Perennial plants can be divided when established in spring. Propagation of Rudbeckia. Seedheads have good winter interest. Herbaceous perennial. £1.99. The seeds come with sowing instructions. They are perhaps better considered a biennial or an annual in colder regions that self seeds quite readily, and is considered invasive by some. My seed grown Rudbeckia fulgida expands by seed and runners every year. Hardy Rudbeckias can be raised from seed, but they differ from the Rudbeckias normally sold by seed of Autumn Shades and Rustic Dwarfs etc. Hardy Rudbeckia found in: Rudbeckia 'Sputnik' Kelvedon Star, Rudbeckia 'Goldilocks', Rudbeckia hirta 'Chim Chiminee'™, Rudbeckia hirta .. Loading... 0 Basket Account * Contact Help. We have a large selection of perennial flower seeds, including many rare varieties. My experience with Rudbeckia hirta 'Indian Summer' is that it is a short lived perennial. Rudbeckia (Black Eyed Susan) ... Harris Seeds continues to offer many of the basic perennial seed varieties that are vital to a well-rounded perennial program. Autumn Colors Rudbeckia. With its sturdy stems and tall growth, it fits perfectly in the background of perennial beds. Did You Know? | Register  |  Log in  Christmas Flowers & Plants. Grid. Seeds Perennials R Rudbeckia (Perennial) Rudbeckia (Perennial) Seeds. It is seen here growing on my nature strip and has not had a drop of water all summer. Avg. Propagate 18-20°C. The Rudbeckia Plants - Goldsturm is supplied in either value plugs or 9cm potted plants. Rudbeckia fulgida ‘Goldsturm’ Goldsturm Coneflower: USDA Zone: 3-9: Plant number: 1.455.060. Mildew can be an issue on the foliage, so avoid over watering. Sow the seed on the surface of the compost, and then cover with a very fine sprinkling of compost or vermiculite. Item #: 855A . Speciosa (black-eyed Susan), providing long-lasting colour right through from the late summer to the first frosts, with bright yellow flowers and contrasting black eyes. 'Goldsturm' form a bushy, upright clump with a profuse display of flowers. Packet: 100 seeds. Sort By: Go. Equally at home in wildflower meadows and cultivated gardens, black-eyed Susans (Rudbeckia hirta) brighten the landscape wherever they grow. Sort By. Mildew can be an issue on the foliage, so avoid over watering. It grows in upright clumps to between 24 to 30 inches tall and 12 to 18 inches wide. Rudbeckia Seeds - Cappuccino: … - Dobies. Dead-head spent flowers and stake taller varieties. . Cherokee Sunset Rudbeckia $ 1.95. Filters. All half-hardy annual varieties and many of the perennial Rudbeckias can be obtained as seed. Products Per Page. Flowers summer. Plants grow 24-36" tall. Rudbeckia species have an average growth rate and prefer full sun (greater than 6 hours of direct sunlight) but will tolerate partial shade. An amazing variety of seed packets for annual and perennial flowers, including AAS winners, cut flowers, bedding, and mixes. Seedlings usually appear in 14-21 days. They can also adapt well to average soils.Rudbeckia have a clumping, but upright habit, and coarse texture. Among the best border perennials available, this is a selection of one of our native North American wildflowers. 1710774 - VAT No. 4.4 out of 5 stars 123. FREE Delivery on your first order shipped by Amazon. The Rudbeckia Plants - Goldsturm is supplied in either value plugs or 9cm potted plants. Please accept our apologies in advance should this result in your having to wait longer than normal in a call queue. Add to Basket. Rudbeckia Seeds and Plants Heat tolerant yellow daisies with dark eyes, very much a favorite for borders. Four perennial flower varieties hand-picked for their heat and drought tolerance. Your browser's Javascript functionality is turned off. RUDBECKIA (Echinacea) Perennial Approx. Page 1 of 1. Filter Products. Plant perennials in spring or autumn. With their masses of colourful blooms, ranging from shades of gold, bronze and mahogany, these half-hardy annuals have a long flowering period. Rudbeckia Propagation. Rudbeckia Propagation. In addition to producing attractive cut flowers, this heat- and drought-tolerant, low-maintenance … Rudbeckia is a genus made up of 23 species, commonly known as Black-eyed Susans, Brown-eyed Susans or Gloriosa Daisy (annual or bienniel). Growing Goldsturm Rudbeckia Garden Seeds. Home » Flower Seed: Perennials and Biennials » Rudbeckia. Plants produce mostly double blooms and some singles and semidoubles. This compact form of the yolk-yellow black-eyed Susan growing to just 60cm (24in) is short enough not to need staking and with strong stalks, it never flops. Plants make a bushy, upright clump with a profuse display of brown-eyed, golden-orange daisies from midsummer through the fall. There’s also a group of hardy perennials, like rudbeckia fulgida var. Make a statement in your yard with Bluestone Perennials Rudbeckias. The long stems are perfect for cutting. Grid View List View. Mar 25, 2018 - Explore theseedhouse | Garden Seeds's board "RUDBECKIA SEEDS", followed by 1714 people on Pinterest. 4–5" blooms of orange, golden yellow, bronze, chocolate, and various bicolors are produced all summer long. A simply magnificent hardy perennial for any full sun to partially shaded area. Ligularia Monarda Nepeta Peony Phlox Pulmonaria Rudbeckia Russian Sage Salvia Scabiosa Sedum Sempervivum Stachys Daisy, Shasta Tiarella Veronica Wildflowers Wintergreen Perennial Seeds Asclepias Butterfly Plant Campanula Catananche Coneflower Coreopsis Daisy Delphinium Digitalis Echinacea Foxglove Gaillardia Gaura Hollyhock Lavender Lupine Penstemon Primrose Rudbeckia Rudbeckia are one of the top ten perennials of many gardeners. Select options. Rudbeckia flowers feature a prominent, raised central disc in shades of green, brown, and in-between tones as well as the more familiar, black-eyed Susans. Our call center will be closed Thursday, 11/26 and Friday, 11/27 for Thanksgiving. Item #: 855B . Rudbeckia (Coneflower) Seeds. Add to Cart . Cherry Brandy Rudbeckia. Different species behave differently -- some are very perennial and return reliably year after year (R. fulgida or laciniata), others may be biennial or short-lived as a perennial and some act like an annual, surviving only their first season but producing a lot of seed so that offspring may appear in following seasons. When it comes to growing Rudbeckia start off with a large modular seed tray (large modules, not large seed tray) filled with a good quality compost such as John Innes 'Seed and Cutting'. Rudbeckia fulgida var. Large flowers bear quilled petals for added texture. Black Eyed Susan Seeds (Rudbeckia hirta) 6865 $ 1.99 – $ 99.75. 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 Seed. Taxonomy: Rudbeckia fulgida var. Sowing Rudbeckia Seeds Start rudbeckia seeds indoors 8 weeks before the last frost date. Facebook Twitter Pinterest Email Large, double flowers in a range of colors. 4.3 out of 5 stars 5. Spectacular summer into fall, and great as cut flowers. ANNUALS and TENDER Perennials (zone 7-11) are offered on: ANNUAL Seed A-C page ANNUAL Seed … You're currently reading page 1; Page 2; Page 3; Page 4; Page 5; Page Next; Show. Achetez Farmerly 50 Seeds of Rudbeckia to to Gold Perennial: Amazon.fr Livraison & retours gratuits possible (voir conditions) Call Toll Free. 52,800 seeds/oz. Class. Best in full sun, forgives neglect. Sign up to our mailing list today and we'll send you regular news and updates about our range of products, plus exclusive deals and offers available only to subscribers. It has a few good years in it but you will need to gather seeds to keep them going past their third year. 49. From yellows to … How to Gather Seeds From Rudbeckia Plants. Rudbeckia Hirta Black Eyed Susan. Items 1-12 of 130. Also known as blackeyed Susan and gloriosa daisy. 25,000 seeds per oz/28 g. Most rudbeckias or gloriosa daisies are considered hardy annuals or tender perennials, the hardiest of all is its northern cousin, echinacea. Le rudbeckia, qu’il soit vivace ou annuel, est une très jolie fleur à floraison estivale. Rudbeckia Aries Cone Flower R. hirta. The species is a short-lived perennial that will self-seed and works well in naturalized areas. Buy high quality rudbeckia seeds today. Although, I have had Brown-Eyed Susan bloom the first year ( Rudbeckia Triloba ). AAS winner. A cheerful, upright annual or short-lived perennial delivering large displays of 2-3in bright yellow flowers with their characteristic brown, domed centres on 2-3ft plants. Clear. Our Rudbeckia seed selection includes both Rudbeckia triloba (perennial) and Ruckbeckia hirta (tender perennial). Large gold flowers on container-friendly plants. A plant that lives for more than two years. Great for beds, borders or meadow areas. Page. Rudbeckia Seed. 'Deamii' is a coneflower that is tolerant of drought, making it the perfect alternative to 'Goldsturm'. Then move them back to a warm spot (70ºF-72ºF) until seeds actually germinate. 24–30". Add to Cart. 1 - 10 of 10 Done. Tender perennial in Zones 9–10. Spectacular summer into fall, and great as cut flowers. View as Grid List. Perennial Seeds. Smilikee 200pcs Rudbeckia Flower Seeds Easy Grow Wild Flower Seed Attracts Bees And Butterfly £1.99. Among the best border perennials available, this is a selection of one of our native North American wildflowers. Gift Certificates 10% Off – Buy Now! It flowers in the first year. Perennial Plants Popular Perennials View All Perennial Plants ... Rudbeckia Seeds - Rustic Dwarf Mix. © 2020 W. Atlee Burpee & Co. All Rights Reserved. Your browser is currently set to block cookies. Grow on in cooler, but not cold conditions. Reliable and rewarding, vividly coloured border plants. Hardy Rudbeckia found in: Rudbeckia 'Sputnik' Kelvedon Star, Rudbeckia 'Goldilocks', Rudbeckia hirta 'Chim Chiminee'™, Rudbeckia hirta .. ... Hardy Annual Seeds Half-Hardy Annual Seeds Perennial & Biennial Seeds Wildflower Seeds Cosmos Seeds Marigold Seeds Nasturtium Seeds. Just cover with a fine layer of seed mix. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec; Sowing Period. Rudbeckia is a genus consisting of annual, biennial and perennial plants with daisy-like flowers in shades of yellow, gold, orange and mahogany red. The seeds of coneflower and related Rudbeckia should be sown on the soil surface a couple of weeks before the last frost of spring is expected. Flowers are daisy like, 2-4 inches wide and have orange yellow rays with a prominent purplish black cone. Extremely versatile and members of the daisy family both bees and butterflies are strongly attracted to them. ... Rudbeckia seeds. However, you’ll find that most of our newer perennial seed introductions center around varieties that will flower the first spring from a fall or winter sowing. These bright, bushy plants have become one of our most popular garden flowers in recent years and it’s not surprising. It has lovely large, bright yellow flowers which have an inner halo of darker gold, with green button centres. Vividly coloured border plants. Back to main Garden Plants Flower Seeds Flower Bulbs & Tubers Plants for Pollinators New In. Login. Showing products 1 to 10 of 10. Like other Rudbeckia varieties, it self-seeds to remain in the garden each year. You can do this by keeping them in the refrigerator or a similarly cold place for 4 weeks after planting. Special offers, discounts, and new products. A tender perennial plant (zones 9-10); grow as a self-seeding annual in cooler zones. Floraison : Juin à septembre. Bluestone Perennials - Home. Growing Green Wizard Rudbeckia Garden Seeds. Rewarding and tolerant, ideal for borders. Ideally the plants should be grown in an area that has good drainage and a heavy soil pH that is slightly acidic to neutral (pH 6 to 7). You can do you bit for our fantastic birdlife in our gardens and leave some of the seed heads for them to munch on; Rudbeckia Seeds Germination. May 31, 2018 - Rudbeckia is a plant genus in the sunflower family. Stems and lance-shaped leaves to 4 inches long are round and hairy. Rudbeckia are regal upstanding plants, perfect in every way for hardy annual or herbaceous borders. The seeds of coneflower and related Rudbeckia should be sown on the soil surface a couple of weeks before the last frost of spring is expected. per page. Goldsturm was the 1999 Perennial Plant Association's Plant of the Year! Share: Rudbeckia occidentalis 'Green Wizard' Western Coneflower. Keep moist. This would include the following common named flowers: Black Eyed Susan (Rudbeckia Hirta) Brown Eyed Susan (Rudbeckia Triloba) Sweet Black Eyed Susan (Rudbeckia Subtemosa) Perennial Black Eyed Susan (Rudbeckia Fulgida) / Goldstrum Rudbeckia hirta are short lived perennial that typically survive up to three years. Among the best border perennials available, this is a selection of one of our native North American wildflowers. They need a fertile soil enriched with lots of organic matter, which holds plenty of moisture in spring and summer, but without becoming waterlogged. My cart (0) View Checkout > Orders over $200 qualify for FREE SHIPPING! They are perfect border plants and also make a fine solitary lawn bed – maybe surrounded with Lavenders or similar. Heat tolerant yellow daisies with dark eyes, very much a favorite for borders. Well-branched plants provide amply blooms for cutting. Rudbeckia loves a sunny spot. Registered Address Gazeley Road, Kentford, Suffolk, CB8 7QB. Rudbeckia prefers a moisture retentive but well-drained soil, so dig in some organic matter, such as well-rotted manure or garden compost before planting. © 2020 Mr. Fothergill's Seeds Limited Add to Cart. Average Packet Content 45 seeds 142030 . Autumn Colors Rudbeckia $ 1.95. Ht. 72% (14 Reviews) A very curious and extraordinary plant. Plants make a bushy, upright clump with a profuse display of brown-eyed, golden-orange daisies from midsummer through the fall. | View Wish List, Your basket Saving and growing locally-native plants from seeds is a rewarding and empowering way to help bolster the biodiversity in your neighborhood and provide essential habitat for many forms of declining wildlife. Cherokee Sunset Rudbeckia. In March or April, this should be sown thinly onto trays of moist seed compost, very lightly covered with a little additional compost, and then kept at a temperature of around 20ºC. Harris Seeds has been a leading supplier of flower seeds since 1879. Christmas Flowers & Plants. sullivantii Seed Type: Perennial Sow Indoors or Outdoors: Goldsturm is easy to grow from seed and recommended for direct sowing outdoors after the frost. $10.99. (Rudbeckia hirta) Position full sun. The giant coneflower (Rudbeckia maxima) makes an impressive appearance in any garden. In March or April, this should be sown thinly onto trays of moist seed compost, very lightly covered with a little additional compost, and then kept at a temperature of around 20ºC. Rudbeckia hirta (Gloriosa Daisy) Short lived perennial (not hardy in the Pacific Northwest). GB 390 5718 35 items     Back to main Garden Plants Flower Seeds Flower Bulbs & Tubers Plants for Pollinators New In. Rudbeckia Mixed Varieties 250 Seeds - Tall, Sturdy perennials.Bright Colours. Rudbecika is a large perennial that requires significant root development. In 2002, 'Cherokee Sunset' won the All-American Selections and Fleuroselect award. Open menu Menu. Rudbeckia has a wildflower habit … Once the flowering has finished the seed heads are very fine. Water well and place in a warm position, a temperature of 15-20oC (60-69oF) is ideal. Vegetable Seeds Flowers in the first summer from seed sown in early spring. Your Privacy is Important to us - We'll never share your email address with anyone else and you can unsubscribe at any time (View full privacy notice), Calls cost the same as calling 01 and 02 numbers and count towards inclusive allowances on landlines and on mobiles, Mr.Fothergill's Black Friday Flower Seeds. Get it Friday, Nov 13. Rudbeckia prefer evenly moist, well-drained soils, but they are drought and heat tolerant once established. Show . Ideally the plants should be grown in an area that has good drainage and a heavy soil pH that is slightly acidic to neutral (pH 6 to 7). Deadhead to avoid self-seeding. 4–5" blooms of orange, golden yellow, bronze, chocolate, and various bicolors are produced all summer long. Some native perennials such as Aster, Rudbeckia and Lobelia will even bloom the first year from winter-sown seed. Seed heads provide winter interest and seed for songbirds. Sow seeds from February to July in trays or pots of good seed compost at a temperature of 65-70F (18-20C). Beginners should start with those perennial seeds that are easiest to start at home: black-eyed Susan (Rudbeckia), catmint (Nepeta), perennial geranium, centranthus, aster, purple coneflower (Echinacea), armeria, snow-in-summer (Cerastium), or yarrow (Achillea). Seedheads have good winter interest. 100%. Sowing advice Sow in trays or pots on the surface of moist seed raising mix. Rudbeckia is the botanical name for Gloriosa Daisy How to Sow Rudbeckia: Best sown indoors at alternating temperatures of 68 and 86° Expect germination in 5-10 days; If started early enough, plants will flower in the first year from seed; Seeds can also be sown outdoors in spring or summer, up to two months before first frost For more help, see the articles. Sow Right Seeds - Perennial Flower Garden Collection for Planting - Russell Lupine, Black-Eyed Susan, Shasta Daisy, Purple Coneflower, and Blanket Flower; Heirloom Seeds, Wonderful Gardening Gift 4.2 out of 5 stars 242. Black-eyed Susans will average 2–3 feet in height and about 1–2 feet in clump … Select options. The seed saving method described above will work on just about any member of the Rudbeckia genus. Select options.