Black Eyed Susan Seeds – Rudbeckia hirta
Rudbeckia hirta • Asteraceae • Native to Eastern & Central North America
Black Eyed Susan Seeds grow into bright, daisy-like flowering plants with golden yellow petals and dark centers. Ideal for garden beds, borders, wildflower gardens, and pollinator-friendly landscapes.
Seed Variety: Cherry Brandy Rudbeckia Seeds
Quantity: 100 Seeds
Selected: Cherry Brandy Rudbeckia Seeds / 100 Seeds
Germination depends on soil, temperature, moisture, and care. See our return policy for details.
At a glance
Black Eyed Susan can spread enthusiastically through self-seeding, so deadhead spent blooms if you want to keep them contained in a more formal planting area.
Botanical profile
Meet the Black Eyed Susan – Rudbeckia hirta
Step-by-step planting
Growing Black Eyed Susan from seed is a rewarding and forgiving process, though results will vary depending on your climate, soil temperature, timing, and how consistently you manage moisture through germination.
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1
Choose Your Timing
Direct sow prairie wildflower seeds outdoors in early spring after your last frost, or start seeds indoors 6 to 8 weeks before transplanting, since Black Eyed Susans also germinate well from a late fall cold stratification directly in the garden.
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2
Prepare the Soil
Loosen the top few inches of soil and remove competing weeds, but do not over-amend with compost or fertilizer since Rudbeckia hirta seeds actually perform well in lean, moderately fertile, well-drained ground.
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3
Sow the Seeds
Press seeds lightly onto the soil surface or cover with no more than 1/8 inch of fine soil, as Black Eyed Susan germination depends on some light reaching the seeds, so burying them too deep is one of the most common causes of poor results.
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4
Water Carefully
Keep the seeded area consistently moist but not waterlogged during the germination period, using a gentle mist or soaker rather than a strong stream that can displace tiny seeds or cause soil crusting.
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5
Expect Variable Germination
Under favorable conditions with soil temperatures around 70 degrees Fahrenheit, seedlings often begin emerging within 7 to 21 days, though germination timing shifts based on your specific climate, soil, and care.
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6
Thin and Transplant
Once seedlings reach 2 to 3 inches tall, thin them to about 12 to 18 inches apart so each plant has room to develop a strong root system and good air circulation, which helps reduce foliar disease.
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Ongoing Black Eyed Susan Care
These drought tolerant flowers need very little once established, but a deep watering during extended dry spells in the first season helps roots settle in, and cutting plants back by a third after the first bloom flush can encourage a second wave of flowers.
Year-round care
Spring
- Sow after last frost
- prepare soil with compost
Summer
- Water regularly
- feed monthly
Fall
- Harvest before frost
- store well
Winter
- Rest
- store seeds cool and dry
Full specifications
Shipping
- Orders are delivered within 8 to 16 business days.
- All orders include tracking.
- Free shipping on all orders.
- Seeds are packed in moisture-resistant, resealable foil packets.
Germination
Germination rates vary depending on climate, soil conditions, and care. Seeds perform best when planted in the right season at the correct temperature, with consistent moisture and adequate light. We take quality seriously and each batch is tested before packaging. If you have concerns about your seeds, reach out and we will do our best to help.
Frequently asked
Questions about Black Eyed Susan Seeds – Rudbeckia hirta
How long do Black Eyed Susan seeds take to germinate?
Germination timing for Black Eyed Susan seeds varies depending on soil temperature, moisture consistency, seed depth, and your local climate. In warm soil around 65 to 70 degrees Fahrenheit and with steady moisture, many gardeners see seedlings emerge within 7 to 21 days. Cooler or drier conditions will slow things down, so patience and consistent watering are important during this stage.
Are Black Eyed Susans annual or perennial?
Rudbeckia hirta is technically a short-lived perennial or biennial, meaning individual plants may live for two years rather than returning indefinitely like a true perennial. However, they self-seed prolifically in many gardens, which means a healthy planting tends to sustain itself over many seasons without replanting. Whether they behave more like annuals or perennials in your garden will depend on your climate and growing conditions.
Are Black Eyed Susans safe for dogs and cats?
Black Eyed Susan is considered mildly toxic to dogs and cats according to the ASPCA, and ingestion can cause mild gastrointestinal upset such as drooling, vomiting, or stomach discomfort. It is not considered severely toxic, but it is worth keeping curious pets away from the plants and seeds to avoid any issues. If you suspect your pet has ingested a significant amount, contacting your veterinarian is always the sensible step.
When should I plant Black Eyed Susan seeds?
The two most reliable windows for planting are early spring, once the risk of hard frost has passed and soil begins to warm, or late fall for a natural cold stratification that mimics what happens in the wild. A fall sowing lets seeds experience winter cold naturally and often results in strong, early spring germination. Starting indoors 6 to 8 weeks before your last frost date is another solid option if you want a head start on the season.
Do Black Eyed Susans need full sun?
Full sun, meaning at least 6 hours of direct sunlight daily, is where Black Eyed Susans perform at their peak and produce the most flowers. They can tolerate light shade, particularly in hotter climates where afternoon shade reduces heat stress, but flowering tends to be less abundant in lower light. For a pollinator garden or a prairie wildflower meadow effect, a sunny open spot will serve them well.
How far apart should Black Eyed Susans be spaced?
Spacing plants 12 to 18 inches apart gives each one enough room to develop fully without crowding, which also helps with air circulation and reduces the risk of powdery mildew, a common issue in dense plantings. If you are seeding a naturalized meadow area rather than a formal border, you can sow more densely and thin as seedlings emerge. Adequate spacing also makes a noticeable difference in flower production per plant.
Do Black Eyed Susans come back every year?
Rudbeckia hirta itself is a short-lived perennial or biennial, so the original plant may not return after two seasons. That said, Black Eyed Susans are enthusiastic self-seeders, and in most gardens they create a self-sustaining colony that returns reliably each year from dropped seed. If you want to encourage this natural return, leave some spent flower heads on the plant at the end of the season rather than deadheading everything.