Rudbeckia maxima. Large, 5-inch flowers bear overlapping rings of orange petals tipped in lemon-yellow and surrounding a bright green eye. Flowers stand atop tall sturdy stems perfect for cutting and attract scores of butterflies. Low maintenance and deer resistant. Rudbeckia hirta.
A dark mahogany center and chocolate brown eye accent the warm tones. Sturdy, upright stems and bright green foliage resist deer and rabbit browsing. An award-winning beauty for season-long color. Easy-to-grow self-seeding annual in cooler zones. Should I go with seeds or young plants? The Clasping Sunflower Rudbeckia amplexicaulis is a lovely lower-growing Rudbeckia for the front of a large border Sweet Black-eyed Susans Rudbeckia subtomentosa , with its taller flowers, would be ideal as part of a meadow planting What about self-seeding?
A native plant that attracts a variety of pollinators, Black Eyed Susan pairs beautifully with other prairie favorites like Purple Coneflower and Butterfly Weed. Its adapatable nature makes it a great choice for poor soils and tough conditions.
This versatile combination can be planted in garden beds, wildflower meadows, and anywhere in between for years of easy color. Tolerates poor soil and less-than-ideal growing conditions. Rudbeckia hirta and Echinacea purpurea. Giant, bi-color double flowers are extremely easy to grow and bloom reliably year after year.
Deer resistant and sun loving, plant this annual in almost any spot. Perfect for trellises and fences! Where should I plant Rudbeckias? Follow these guidelines for matching the varieties to particular situations in your own garden: Containers: Long blooming varieties that do not grow too tall are ideal for container plantings: Cherry Brandy Denver Daisies Gloriosa Daisies And any one of these would look stunning mixed with a soft Blue Fescue grass for a contrast in both texture and color.
Back of the border: Some Rudbeckias will reach five feet high or more, and these will look stunning as an accent grouping in front of some tall Miscanthus grasses near the back of the border: Sweet Black Eyed Susan - Rudbeckia subtomentosa.
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Growing Glorious Black-Eyed Susans With daisy-like blooms that last for weeks, these prolific wildflowers bring nonstop color to the late-summer garden By Anne Balogh Share:. Zones: Varies by species, but the typical range is 3 through 9. Bloom period: Plants have a long bloom period even without deadheading, typically flourishing from late July until the first frost. Height: Varies dramatically, anywhere from 10 inches to 7 feet, depending on the cultivar.
Flower characteristics: Flower sizes range from 2 to 9 inches wide and can be single, semi-double, or fully double. Common types: There are about 25 species of Rudbeckia , all native to North America.
Where to plant: Rudbeckia will thrive in just about any sunny location that has well-drained soil. Sowing directly in the garden: Scatter seeds then gently press them into the soil or cover with a very light layer of soil.
Even so, here are some steps you can take to prolong their bloom time and keep them healthy: To extend the flowering period, deadhead your plants by pinching off the blooms at the base of the stem. You can cut also cut back black-eyed Susans after they flower to encourage a second surge of blooms later in the fall. If you want to attract birds to your garden, leave a few flower heads on your plants and let them to go to seed. Because Rudbeckia are zealous self-seeders, you may end up with more plants than you bargained for.
If your plot becomes overcrowded, remove or transplant the extras. You can propagate perennial black-eyed Susans by division in early spring, just as growth begins to develop, or in the fall after they finish flowering. Till organic matter into the garden for better soil texture. Choose a full sunlight position, since black-eyed Susans need to maximize their photosynthesis processes to create the wide-eyed blossoms. Apply approximately 1 inch of water each week to encourage root spread without waterlogging the roots.
If your root clumps remain in wet soil conditions, rot may set in and cause severe dieback or failed growth. After summer blossoming, you may be tempted to cut the plant down to avoid unsightly foliage and blossom fade.
However, black-eyed Susans need their postbloom foliage. As long as it is still green, the leaves are photosynthesizing. This energy enters the roots for future blossom growth and sustenance. If your soil is moist, then you do not have to water them as often.
Only on an as needed basis. They have very strong stems that will hold them upright. These plants are typically around 2 feet tall so they do not need to be supported with any kind of staking.
Some varieties can be taller so they may need support. On new growth you might find snails and slugs. You may also notice aphids on Black Eyed Susans, these can be washed away with water from a hose. See more information on garden pests and plant diseases. Powdery mildew is a fungus that shows up as white patches on the leaves. When you see powdery mildew, you can cut the plants down to stop the growing of the powdery mildew. Then they will continue to grow, as they should.
Black Eyed Susan. Black Eyed Susan Information. Scientific Name — Rudbeckia. Life Cycle — Annual, Biennial, Perennial. Flowering Season — Summer to Autumn.
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