Rudbeckia - Black-Eyed Susan Rudbeckia


Rudbeckia hirta

A cottage garden favorite for its easy to grow habit and ability to produce hundreds of blooms over the summer and fall. Excellent cut flower with up to 10 days of vase life. Plants grow 2-3′. Self-seeding biennial or hardy annual. Full sun. Hardy to zone 3.
SKU: 341-001-0-C Category:

Product Description

Average Seed / oz Seed / 100′ Row Average Yield / 100′ Row Days to Harvest
80000 n/a n/a 120
Planting Season Ideal Soil Temp Sun Frost Tolerance
After Last Frost 60°F Full/Part Frost Sensitive
Sowing Method Seed Depth Direct Seed Spacing Seeds Per Packet
Transplant or Direct Seed surface N/A 1100
Mature Spacing Days to Sprout Production Cycle Seed Viability
12-18″ 5-21 Annual 2-3 years

Bed Preparation

Black-Eyed Susan is an annual that prefers rich, well-drained soil, but will tolerate average soils. Choose a site with full sun to partial shade.


Seeds need a period of cold, moist conditions for optimal germination. Direct sow outdoors in fall or stratify seed in a refrigerator for 3-4 weeks before sowing in the spring. Sow seeds on the soil surface and press lightly to settle. Seeds will sprout in 5-21 days. Thin seedlings so that mature plants are 12-18" apart.

Keep adequately moist for the first year of growth until plants become well established. Heat and drought tolerant once established.


Black-Eyed Susan is a prolific bloomer and cut flowers can be harvested from summer-fall.

Seed Saving

Black-Eyed Susan is a self-seeding annual whose seed matures in late summer/fall. Seed is ready to harvest when dry and brown. Store seeds in a cool, dry place. Seeds are viable for 2-3 years.

Additional information

Weight N/A

1/2 grams – Packet, 1/8 oz


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