Rudbeckia - Black-Eyed Susan
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.
|Average Seed / oz||Seed / 100' Row||Average Yield / 100' Row||Days to Harvest|
|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|
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.
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.