How And When To Divide Black Eyed Susans
Edward R. Forte
November 24, 2021
The cheery yellow blooms of black-eyed Susan (Rudbeckia fulgida) enliven sunny garden spots and beckon pollinators.The spent flower heads produce seeds that many backyard birds relish, including goldfinches that clasp the swaying stems as they eat.When you’re ready to lift the clumps of black-eyed Susans, press a sharp shovel or spading fork into the ground all around your plants, about 6 inches from the outside leaf edges.Separate plant sections that have three to five healthy shoots each by pulling them apart with your hand or by cutting them with a sterilized knife or garden shears.After you’ve separated your black-eyed Susans, plant them immediately in the soil you prepared ahead of time so their roots never dry out.They flourish in full sun (at least six hours each day) and well-draining soil, fertilized in spring according to soil-test results when the new growth emerges. .
What To Do With Black Eyed Susan In The Fall, How To Cut Back
Wondering how to care for your Black Eyed Susan as they begin to die back this fall?Today’s article is all about fall care for your Black Eyed Susan plants – including how and when to cut them back, and how to divide and transplant ones that have overgrown their space.When To Cut Back Black Eyed Susan.They can be cut back in the fall or spring, without harming the plant’s bloom cycle either way.Cutting Back In The Fall.Many prefer to cut the plants back to the ground as soon as the flowers and stems begin to fade.Cutting back in the fall can also help protect plants from disease, mildew and pests.But there is another reason many choose to cut back Black Eyed Susan earlier.There are also many gardeners who prefer to keep the plants up through winter.For starters, the seed head of Black Eyed Susan is a great source of food for birds.Disease & Mildew – Fall Care For Black Eyed Susan.Dividing & Transplanting Overgrown Plants – Fall Care For Black Eyed Susan.When allowed to grow too dense, Black eyed Susan can begin to bloom less with each passing year.If dividing in the fall, it is best to divide as soon as the plant’s foliage begins to show signs of dying back.To divide, begin by cutting back the foliage to within a few inches of the surface of the soil. .
How to Divide a Black Eyed Susan
Prepare a garden spot for the divided black-eyed Susans at least a day prior to making the divisions.Use a shovel or a garden fork to cultivate the soil to a depth of 10 inches, and work an inch of compost into the top of the soil.If possible, divide black-eyed Susans on a cloudy day, as dividing the plants on a hot day will cause the black-eyed Susans to dry out quickly.Keep the soil moist until the roots are established, which is indicated by the appearance of new growth. .
Transplanting Black Eyed Susan – Toronto Master Gardeners
The golden flowers and black centers of black-eyed susan (Rudbeckia fulgida ‘Goldsturm’ ) are a welcome addition to any perennial border.These cheerful plants have a long bloom time (July-September) and depending upon the weather I have seen them flowering well into the end of October.As a result, the best time to transplant them is when they are dormant (early spring or fall), well before the first frost.Planting them in the fall, again well before the first frost, has its advantages because it gives their roots time to become established before winter sets in, which will get them off to a faster start in the spring.You might consider leaving the beautiful flower heads on these shrubs to add visual interest to your garden during the bleak winter months. .
Black Eyed Susan: How To Grow And Care For Rudbeckia Plants
Black eyed susan or brown-eyed susan, coneflower or Gloriosa daisy.Best Products To Fix Black Eyed Susan Pests & Diseases:.Common Name(s) Black eyed susan, black-eyed susan, blackeyed susan, brown-eyed susan, brown betty, Gloriosa daisy, Golden Jerusalem, English bull’s-eye, poor-land daisy, yellow daisy, yellow ox-eye daisy, Rudbeckia Goldsturm, orange coneflower, perennial coneflower, Goldsturm black-eyed susan, California coneflower, browneyed susan, brown eyed susan, thin-leaved coneflower, three-leaved coneflower, and more Scientific Name Rudbeckia hirta, Rudbeckia fulgida, Rudbeckia californica, Rudbeckia triloba, and more Family Asteraceae Origin United States Height 1-3 meters Light Full sun Water Medium/moderate watering Temperature Warmer temperatures (60 degrees F and up) Humidity Drought-tolerant but can handle humidity as well Soil Well-draining, organic matter rich Fertilizer None required, light slow-release fertilizer okay, compost okay Propagation By division, cuttings, or seeds Pests Aphids and cabbage worms.Types of Black Eyed Susans.There’s many types of Rudbeckia species, although only a few qualify as “black eyed susans”.Rudbeckia hirta is also the most often Rudbeckia called black eyed susan.There are many black eyed susan varieties and cultivars of this particular species.One of the best Rudbeckia varieties for many gardeners is Rudbeckia fulgida.Rudbeckia triloba, ‘Browneyed Susan’, ‘Brown-Eyed Susan’, ‘Brown Eyed Susan’, ‘Thin-Leaved Coneflower’, ‘Three-Leaved Coneflower’.The leaves grow in triads, giving it its three-leaved name, and the center of the flower is typically a short dome-shape of dark brown rather than nearly-black like other related species.Black Eyed Susan Care.Soil.For best black eyed susan care, you don’t want to overfertilize your soil.To divide black eyed susan, carefully scoop out the soil around the base of the plant, establishing how wide the root mass is and clearing enough room to remove it all at once.Slide a trowel or shovel in underneath the root mass, being careful not to cut the roots, and lever it out from the soil.Propagating Black Eyed Susan By Cuttings.While it’s possible to propagate by cuttings, black eyed susan tends to be a bit less effective than some other plants.Propagating Black Eyed Susan By Sowing Seed.These plants will generally grow between 1-3 feet tall and can spread 12-18 inches.Once you’ve placed your seed, loosely cover with soil and water gently, being careful not to wash the covering soil away.Place the root cluster into the soil at the same height as the original plant was buried to, and gently fill in under and around the root mass with more potting soil.Problems When Growing Black Eyed Susan.While there are very few growing problems with black eyed susan (other than the plant perhaps growing too large and needing to be divided), there are some pests and diseases to be prepared for.Be careful when you spray, because butterflies may also be susceptible to pyrethrins.Black eyed susan is susceptible to a number of plant diseases, most of which come from watering over the top of the plant or overly-wet soil.However, the liquid copper fungicide will treat powdery mildew as well as some leaf spot diseases and downy mildew, so it’s a good product to have on hand.Black eyed susan is also susceptible to leaf spot diseases.If your pets or children are likely to try to eat the flowers or leaves of your plants, this probably isn’t a good choice for your garden.Q: Are there other uses for black-eyed susan?Q: Is black eyed susan annual or perennial?A: There’s annual, biennial, and short-lived perennial black eyed susan varieties.Depending on which of the Rudbeckia varieties you opt to grow, some of the typically biennial types can be coaxed out into perennials with the right rudbeckia care. .
Black-Eyed Susans ‘Goldsturm’ cultivar was named Perennial Plant of the Year in 1999.Pests and Disease Problems: Powdery mildew may cause white patches to form on leaves.Black-eyed Susans are easy to grow in North Texas and tolerate summer heat and dry conditions.They require full sun to partial afternoon shade with a medium amount of supplemental water after establishment — once or twice a week during the growing season.Removing dead flower heads every two weeks helps prolong the blooming season. .