Black-Eyed Susan Seeds – Rudbeckia hirta

Golden Wildflowers for Sunny Garden Spaces

Black-Eyed Susan (Rudbeckia hirta) brings cheerful golden-yellow petals and contrasting dark brown centers to borders, wildflower gardens, and natural-style plantings. Upright plants reach approximately 24 inches tall, creating a warm display that attracts bees and butterflies.

Imagine a sunny border filled with golden blooms in late summer and fall. Deadhead spent flowers to encourage a longer display, or leave some seed heads to allow natural reseeding where conditions are suitable.

Plant Details

• Botanical name: Rudbeckia hirta.
• Common name: Black-Eyed Susan.
• Flowers: Golden-yellow petals with dark brown centers.
• Approximate height: 24 inches.
• Bloom season: Late summer and fall.
• Life cycle: Listed for this seed as biennial; allow for flowering in the second year rather than expecting guaranteed first-year blooms.
• USDA zones: 3–9, as listed in the supplied growing information.
• Light: Full sun.
• Soil: Adaptable to a range of soil textures; avoid excessively dry conditions during establishment. Listed pH range: 5.8–6.8.
• Spacing: Approximately 12–18 inches apart.

Choose Your Seed Pack

Available options include 200 seeds, 2,000 seeds, 1 oz, 1/4 lb, 1 lb, and 5 lb. The 1 oz option is labeled approximately 80,000 seeds; weight-based seed counts are estimates. Select your preferred size from the product options.

This listing is for planting seeds, not live plants. This upright Rudbeckia is different from the climbing Black-Eyed Susan vine, Thunbergia alata.

Handling Small Seeds

Open the packet carefully indoors, away from wind or drafts. Sow the small seeds sparingly and gently press them onto the prepared surface. They need light for germination, so do not bury or cover them with soil.

Planting from Seed

• Outdoor timing: Sow in fall or early spring.
• Prepare the bed: Remove weeds, loosen the surface soil, and rake to create a fine seed bed.
• Sowing depth: Surface sow and lightly press seeds into contact with the soil. Do not cover.
• Temperature: The supplied germination directions list approximately 70°F.
• Germination: Allow approximately 7–30 days under suitable conditions.
• Moisture: Keep the seed bed moist until germination without washing seeds away.
• After establishment: Thin or transplant to approximately 12–18 inches apart.

Growing in Containers

Bring the golden flowers to a sunny patio with a roomy container that accommodates the plant’s upright, approximately 2-foot growth.

• Choose drainage: Use a stable pot with drainage holes and room for root development.
• Use potting mix: Fill with a well-draining mix suitable for flowering container plants.
• Surface sow: Press seeds gently onto the mix without burying them, and keep the surface moist during germination.
• Provide full sun: Position where plants receive plenty of direct light.
• Avoid crowding: Thin seedlings and allow room for mature growth.
• Check water regularly: Containers can dry faster than garden beds. Water as needed and let excess water drain freely.
• Maintain the display: Remove spent flowers for continued bloom, or leave some seed heads if you want seed to mature.

Wildflower Beds and Larger Plantings

The supplied sowing guidance lists approximately 1/2 oz per 1,000 square feet or 2 lb per acre. Treat these as planting guidelines rather than guaranteed coverage or plant counts. Good seed-to-soil contact, weed control, moisture, and local conditions affect establishment.

Seasonal Care

Monitor young plants while they establish, keep competing weeds under control, and avoid letting the seed bed dry out during germination. Flowering time varies with sowing date and conditions. Plants may reseed when some blooms are left to mature.