Black-Eyed Susans are cheerful, sun-loving plants known for golden yellow petals and dark cone-shaped centers. They offer many benefits, including long summer bloom time, drought tolerance, and strong pollinator value. Most gardeners grow them as easy-care perennials or self-seeding short-lived perennials that bring dependable color to sunny borders, cottage gardens, pollinator plantings, cut flower gardens, and naturalized areas.
Black-Eyed Susans belong to the genus Rudbeckia. They often share similar yellow, daisy-like flowers, but they do not all behave the same way in the garden. Some are long-lived perennials, some are short-lived perennials or biennials, and some are grown as annuals. The good news is that most need the same basic care: full sun, well-drained soil, careful watering while young, light feeding, optional deadheading, and good airflow to reduce leaf disease.
The quick answer: Black-Eyed Susans grow best in full sun with well-drained soil. Water regularly the first year, then water during long dry spells once established. Avoid heavy fertilizer, deadhead for more blooms, leave some seed heads for birds, and improve airflow if leaf spots, rust, or powdery mildew appear.
Black-Eyed Susans are easy-care sunny garden plants with bright golden flowers and dark cone centers.
Planting in too much shade, causing fewer flowers and leggy growth
Soil
Average, well-drained soil
Planting in soggy soil or burying the crown too deeply
Water
Water regularly the first year; water during drought after establishment
Keeping mature plants constantly wet or letting new plants dry out
Fertilizer
Light compost or slow-release fertilizer in spring if needed
Over-fertilizing, which can cause floppy growth
Deadheading
Deadhead for more blooms, or leave seed heads for birds
Removing all seed heads if you want wildlife value
Winter care
Cut back after frost or leave seed heads standing until spring
Heavy mulch over the crown in wet winter soil
What Are Black-Eyed Susans?
Black-Eyed Susans are flowering plants in the genus Rudbeckia. They are known for daisy-like flowers with yellow, gold, orange, bronze, or reddish petals surrounding a dark brown, black, or greenish central cone.
They are commonly grown as perennials, biennials, or annuals depending on the species, cultivar, and climate. Many types self-seed readily, which helps them persist in open beds, meadows, wildflower gardens, and naturalized areas.
Black-Eyed Susans are valuable in pollinator gardens because the flowers attract bees, butterflies, and other beneficial insects. The seed heads can also feed birds if left standing in late summer, fall, and winter.
Black-Eyed Susan vs. Black-Eyed Susan Vine
Black-Eyed Susan and Black-Eyed Susan vine are not the same plant. This is a common point of confusion for gardeners.
Black-Eyed Susan usually refers to Rudbeckia, a sun-loving flowering plant in the aster family. Black-Eyed Susan vine refers to Thunbergia alata, a tropical vine in a different plant family. Thunbergia is typically grown as an annual in most of the United States and is only perennial in very warm climates.
Black-Eyed Susan vine is a different plant from perennial Black-Eyed Susans. It is usually grown as a warm-season annual vine.
Trellises, hanging baskets, containers, warm-season color
Types Of Black-Eyed Susans
There are many species and cultivars of Rudbeckia. Some are short-lived but self-seed well, while others grow as long-lived clumping perennials. Knowing what type you have helps set realistic expectations.
Type
Typical Life Cycle
Best Use
Rudbeckia fulgida
Reliable perennial
Borders, mass plantings, pollinator gardens, low-maintenance perennial beds
Rudbeckia hirta
Often biennial or short-lived perennial; sometimes grown as an annual
Fast color, wildflower gardens, self-seeding areas, cut flowers
Rudbeckia triloba
Biennial or short-lived perennial that self-seeds readily
Naturalized plantings, meadow-style gardens, pollinator gardens, and late-season color
Rudbeckia laciniata
Tall perennial
Moist meadows, back borders, naturalized areas, large wildlife gardens
Rudbeckia maxima
Tall perennial
Meadow-style plantings, back borders, pollinator gardens, naturalized areas
Compact cultivars
Varies by cultivar
Containers, front borders, walkway edges, smaller gardens
Planting Black-Eyed Susans
Plant Black-Eyed Susans in spring after the danger of hard frost has passed, or in early fall while the soil is still warm enough for roots to establish. Spring planting is easiest for most gardeners because the plants have the full growing season to settle in.
Choose a sunny location with well-drained soil. Black-Eyed Susans are not particular about soil fertility and often grow well in average or even poor soil, but they do not want to sit in wet, compacted ground.
Choose a full sun location. More sun usually means more flowers and sturdier stems.
Check drainage. Avoid low areas where water stands after rain.
Dig a wide hole. Loosen the soil wider than the root ball.
Plant at the same depth. Keep the crown level with the surrounding soil.
Backfill gently. Firm soil around the roots without compacting it heavily.
Water deeply. Soak the root zone after planting.
Mulch lightly. Keep mulch away from the crown to reduce rot risk.
Plant Black-Eyed Susans at the same depth they were growing in the container and avoid burying the crown.
How Much Sun Do Black-Eyed Susans Need?
Black-Eyed Susans bloom best in full sun. Aim for at least 6 hours of direct sunlight per day. They can tolerate some light shade, especially in hot climates, but too much shade usually causes fewer flowers, weaker stems, and a more open, leggy plant.
If your Black-Eyed Susans are stretching, leaning, or blooming poorly, check whether nearby shrubs, trees, fences, or taller perennials are shading them more than expected.
Best Soil For Black-Eyed Susans
Black-Eyed Susans grow well in average, well-drained soil. They are more tolerant of poor soil than many flowering perennials, which makes them useful for hot, sunny, low-maintenance areas.
Heavy clay soil can be improved with compost to increase drainage and soil structure. Avoid over-amending only the planting hole in dense clay, because that can trap water around the roots. Improving a wider area or planting slightly high is usually better.
Best soil rule: Black-Eyed Susans are not heavy feeders and require good drainage above all.
Watering Black-Eyed Susans
Newly planted Black-Eyed Susans need consistent moisture while they establish. Water deeply when the top few inches of soil begin to dry. After the plants are established, they become drought tolerant and usually need extra water only during long dry periods.
Water at the base of the plant when possible. Wet foliage can increase the chance of leaf spot, rust, powdery mildew, and other fungal problems, especially during humid weather or when plants are crowded.
Watering tips
Water deeply after planting.
Keep new plants evenly moist during the first growing season.
Water established plants during long dry spells.
Use drip irrigation or soaker hoses when possible.
Avoid frequent overhead watering.
Check soil moisture before watering plants that look wilted.
Fertilizing Black-Eyed Susans
Black-Eyed Susans do not need much fertilizer in the ground. In average garden soil, a light layer of compost in spring is often enough. Too much fertilizer, especially nitrogen, can encourage leafy growth and weak stems instead of more flowers.
If plants are growing in containers or very poor soil, use a balanced slow-release fertilizer in spring. Avoid fertilizing late in summer or fall because plants should begin preparing for dormancy.
Fertilizer tips
Use compost in spring for a gentle nutrient boost.
Skip fertilizer if plants are already vigorous and blooming well.
Use slow-release fertilizer for container plants if needed.
Avoid high-nitrogen fertilizer.
Stop fertilizing by late summer.
Deadheading Black-Eyed Susans
Deadheading means removing faded flowers. Black-Eyed Susans do not always need deadheading, but it can make the plant look cleaner and may encourage more flowers. It can also reduce self-seeding if extra seedlings are not desired.
To deadhead, cut the spent flower stem back to a healthy leaf or side stem. If you want birds to enjoy the seeds, stop deadheading late in the season and leave some seed heads standing.
Deadhead or leave seed heads?
Goal
What To Do
More blooms and tidy plants
Deadhead spent flowers during summer.
Less self-seeding
Remove flowers before seeds mature.
Bird food and naturalized seedlings
Leave late-season seed heads standing through fall and winter.
Pruning Black-Eyed Susans
Black-Eyed Susans need very little pruning. During the growing season, remove spent flowers to encourage more blooms or a tidier plant. Remove diseased foliage as soon as you notice it to reduce the spread of fungal problems.
After frost, plants will die back in cold climates. You can cut stems back to a few inches above the ground in fall, or leave the seed heads standing for birds and winter interest and cut them back in late winter or early spring.
When to prune Black-Eyed Susans
Summer: Deadhead faded flowers if desired.
Late summer: Stop deadheading if you want seed heads for birds.
Fall: Remove diseased foliage and dispose of it.
Late winter or early spring: Cut old stems down before new growth emerges.
Growing Black-Eyed Susans In Pots
Black-Eyed Susans can grow well in containers, especially compact varieties. Potted plants are useful for sunny patios, decks, balconies, entryways, and mixed seasonal planters.
Use a container with drainage holes and a well-draining potting mix. Container-grown plants dry out faster than in-ground plants, so check soil moisture often during hot weather. Water when the top 1-2 inches of potting mix feel dry.
Container care tips
Choose compact varieties for most containers.
Use a pot with drainage holes.
Use potting mix instead of garden soil.
Place the container in full sun.
Water when the top 1-2 inches of soil are dry.
Fertilize lightly in spring or monthly with diluted liquid fertilizer during active growth if needed.
Protect perennial varieties in pots from harsh freeze-thaw cycles in winter.
Winter Care For Black-Eyed Susans
Black-Eyed Susans are low-maintenance in winter. In cold climates, the top growth dies back after frost and the crown stays dormant until spring. The most important winter-care issue is drainage. When moisture doesn't drain properly around the crown, plants can rot and disappear over winter.
Leave some seed heads standing if you want to feed birds and allow reseeding. Remove and dispose of diseased foliage instead of leaving it in the garden. If your area has very wet winters, avoid heavy mulch over the crown.
Winter care tips
Leave seed heads standing for birds if plants were healthy.
Remove diseased leaves and stems from the garden.
Avoid piling mulch directly over the crown.
Improve drainage if plants disappear over winter.
Protect container plants in cold climates by moving them to a sheltered, unheated location.
Are Black-Eyed Susans Good For Pollinators And Birds?
Yes. Black-Eyed Susans are excellent plants for pollinator gardens. Bees, butterflies, and other beneficial insects visit the flowers for nectar and pollen. The open flower shape makes them easy for many insects to use.
After flowering, the seed heads can provide food for birds. Leaving some late-season seed heads standing is a simple way to add wildlife value and winter interest to the garden.
Best wildlife approach: Deadhead early blooms for a tidier plant and more flowers, then leave the last flowers of the season to form seed heads.
Do Black-Eyed Susans Spread?
Black-Eyed Susans can spread by clumping, underground runners, and self-seeding. In open sunny areas, they may naturalize and come back from seed year after year. This is helpful in meadow-style gardens and wildflower plantings, but it may not be desirable in small, formal beds.
Rudbeckia are native to the U.S. and therefore not considered invasive, but they can reseed abundantly or spread by underground runners. To reduce seedlings, deadhead flowers before they mature into seed heads. To encourage naturalizing, leave seed heads standing and allow seedlings to grow where they fit. For species like Rudbeckia laciniata that spread by rhizomes, install a physical root barrier to limit the spread.
Best Companion Plants For Black-Eyed Susans
Black-Eyed Susans pair best with plants that enjoy full sun, good drainage, and moderate to dry soil once established. They look especially good with purple, blue, white, pink, and burgundy flowers or soft ornamental grasses.
Coneflowers for a classic sunny pollinator combination.
Ornamental grasses for movement, texture, and winter interest.
Bee balm for hummingbirds and bold summer color.
Salvia for upright purple or blue flower spikes.
Catmint for soft texture and long bloom time.
Sedum for late-season flowers and drought tolerance.
Yarrow for dry sunny sites and pollinator value.
Milkweed for monarch caterpillars and native-style pollinator beds.
Common Black-Eyed Susan Problems
Problem
Likely Cause
What To Do
Black or brown spots on leaves
Septoria leaf spot, Cercospora leaf spot, or other fungal leaf spots
Remove infected leaves, improve airflow, avoid overhead watering, and clean up debris
Yellow leaves
Overwatering, poor drainage, fungal or bacterial leaf spot, nutrient stress, or natural aging
Check soil moisture, improve drainage, remove diseased foliage, and water at the base
White powder on leaves
Powdery mildew
Increase airflow, avoid overcrowding, and remove badly infected foliage
Plants are floppy
Too much shade, rich soil, heavy fertilizer, or tall variety
Move to more sun, reduce fertilizer, use supports, or choose compact varieties
Not blooming
Too much shade, young plant, too much nitrogen, drought stress, or overcrowding
Increase sun, avoid heavy feeding, water during drought, and divide crowded clumps
Plants disappear after winter
Wet winter soil, crown rot, short-lived variety, or weak establishment
Improve drainage, plant earlier in the season, and allow some self-seeding
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Frequently Asked Questions About Black-Eyed Susan Care
Are Black-Eyed Susans annuals or perennials?
Black-Eyed Susans can be annuals, biennials, short-lived perennials, or true perennials depending on the species and variety. Many self-seed, which helps them return even when individual plants are short-lived.
Do Black-Eyed Susans come back every year?
Many Black-Eyed Susans return every year, especially perennial types. Short-lived types may only live a few years, but they often self-seed and produce new plants if seed heads are left standing.
Do Black-Eyed Susans need full sun?
Black-Eyed Susans bloom best in full sun with at least 6 hours of direct sunlight per day. They can tolerate light shade, but too much shade often causes fewer flowers and leggy growth.
How often should Black-Eyed Susans be watered?
Water newly planted Black-Eyed Susans regularly during the first growing season. Once established, they tolerate drought and usually need water only during long dry spells.
Are Black-Eyed Susans drought tolerant?
Yes. Black-Eyed Susans are drought tolerant once established. Young plants still need consistent moisture while they develop roots.
Should Black-Eyed Susans be deadheaded?
Deadheading is optional. It can encourage more blooms and reduce self-seeding. Leaving some seed heads in late summer and fall provides seeds for birds to eat.
Should Black-Eyed Susans be cut back in fall?
You can cut them back after frost, especially if the foliage is diseased. If plants are healthy, you can leave seed heads standing through winter for birds and cut them back in late winter or early spring.
Why are my Black-Eyed Susan leaves turning black?
Black or brown spots are often caused by fungal leaf spot diseases such as Septoria or Cercospora. Improve airflow, avoid overhead watering, remove infected foliage, and clean up plant debris.
Why are my Black-Eyed Susan leaves turning yellow?
Yellow leaves can be caused by overwatering, poor drainage, leaf spot, nutrient stress, drought stress, or natural aging. Check soil moisture and inspect the foliage closely before treating.
Are Black-Eyed Susans invasive?
Black-Eyed Susans can self-seed readily, but they are not considered invasive. Deadhead flowers before seed forms if you want to limit seedlings.
Are Black-Eyed Susans deer resistant?
Black-Eyed Susans are generally considered deer resistant, but no plant is deer proof. Deer may browse them if food is scarce.
Are Black-Eyed Susans poisonous?
Ingestion is generally not fatal, but the plant has a bitter taste and should not be eaten. Some people may experience skin irritation or allergic reactions from handling the plant, so gloves are a good idea for sensitive gardeners.
Can Black-Eyed Susans grow in pots?
Yes. Compact Black-Eyed Susan varieties grow well in pots with drainage holes and a well-draining potting mix. Potted plants grow best in full sun, like in-ground plants.
Bottom Line
Black-Eyed Susans are some of the easiest and most rewarding plants for sunny gardens. They bloom for a long time, support pollinators, tolerate dry weather once established, and can self-seed enough to keep a naturalized planting going for years.
For the best results, plant them in full sun and well-drained soil. Water regularly while young, keeping foliage dry, and apply minimal fertilizer. Remember to leave some seed heads for birds at the end of the season.
Sources
NC State Extension Gardener Plant Toolbox: Rudbeckia hirta
University of Minnesota Extension: Rudbeckia Disease Guidance
Robbin Small has nearly 30 years of experience in and around the horticultural industry and has gardened in several regions, including the Pacific Northwest, Scotland, and Southwest England. She has been a Washington State University Master Gardener volunteer since 2008 and writes about sustainable gardening, plant care, and ornamental landscapes for Plant Addicts.
Originally published July 31, 2022. Last updated June 11, 2026.
