Flower Library
Black-eyed Susan
Rudbeckia hirta · Asteraceae (Korbblütler)
Black-eyed Susan brings radiant late-summer yellow with a striking dark eye into the vase, on long, sturdy stems and with an easy-going, meadow-like character. As an honest cottage-garden flower, Rudbeckia is a favourite for natural-style bouquets. Because we hand-pick our stock fresh at the Veiling Rhein-Maas, only just-opening, crisp stems reach you.
- Season
- July – August – September – October
- Vase life
- 7–10 days
- Latin name
- Rudbeckia hirta
- Colors
- Golden yellow, Sunshine yellow, Orange, Bronze, Rust red, Mahogany, Green-eyed (Prairie Sun), Bicolour
Botanically, Rudbeckia belongs to the daisy family (Asteraceae). Its hallmark is the tongue-shaped, bright yellow to orange ray florets surrounding a raised, mostly black-brown centre that gives the flower its name, Black-eyed Susan. As a cut flower it is chiefly Rudbeckia hirta that is used, forming strong, branched stems with many individual heads; the tall Rudbeckia triloba in addition delivers a profusion of dainty blooms per stem.
In floristry we value Rudbeckia for its warm palette ranging from golden yellow through orange and bronze to rust red and mahogany tones. The dark eye provides contrast and depth and instantly makes any bouquet feel more alive. Rudbeckia brings fullness and movement to summer and late-summer arrangements and works beautifully in loose, relaxed meadow bouquets as well as in bold, sunny table pieces.
When buying we look for heads that have only just opened, firm, straight stems and rich green, unwilted foliage. A practical tip from the workshop: Rudbeckia clouds the vase water faster than many other cut flowers, so it pays to strip leaves thoroughly below the waterline and change the water often. Fresh stock, well stripped and kept in clean water, then lasts reliably beyond the commonly quoted seven days.
Stylistically, Rudbeckia is a late-summer classic. It pairs with sunflowers, dahlias, zinnias, asters, sneezeweed, rosehips and grasses, carrying the warm tones of a cottage-garden bouquet. For a calmer look, combine the yellow heads with plenty of fresh greenery and a few white accents so the dark eye stands out elegantly. Green-eyed varieties such as Prairie Sun add a modern, fresh note.
Care
- 01Cut stems at an angle and place them straight into fresh, clean water.
- 02Strip off all leaves below the waterline, which matters especially with Rudbeckia as the water otherwise turns cloudy quickly.
- 03Change the vase water every one to two days and re-cut the stem ends each time.
- 04Keep the vase in a cool spot, away from direct sun, heating and ripening fruit.
- 05Add fresh cut-flower food, or a single drop of chlorine bleach per litre, to slow bacteria in the water.
- 06Pinch out spent individual heads regularly so young buds open more freely.
- 07If you are allergic to daisy-family plants, wear gloves when handling, as prolonged skin contact can irritate sensitive skin.
Frequently asked
- How long does Black-eyed Susan last in a vase?
- With a fresh cut, clean water and regular water changes, Rudbeckia lasts roughly seven to ten days. Thorough leaf-stripping below the waterline is important, as the water otherwise clouds quickly. Fresh, carefully prepared stems usually reach the upper end of that range.
- Is Black-eyed Susan toxic to cats, dogs or children?
- Rudbeckia is considered non-toxic to humans, cats and dogs and does not appear on the common lists of poisonous plants; the ASPCA also lists it as non-toxic. As with many plants, eating larger amounts may cause mild stomach upset, so plant material is not for chewing. In people allergic to daisy-family plants, contact with the slightly hairy stems and leaves can cause skin irritation.
- When is Rudbeckia in season as a cut flower?
- The main season runs through summer and late summer, roughly from July to October. During this period Rudbeckia is available at the Veiling Rhein-Maas in its best colour depth and stem quality and fits perfectly into seasonal cottage-garden bouquets.
- Why is Rudbeckia called Black-eyed Susan in English?
- The name refers to the dark, almost black flower centre that sits like an eye, framed by the yellow ray petals. In German the genus is called Sonnenhut because the raised centre resembles a little hat; not to be confused with Echinacea, which shares the German name Sonnenhut.