Surface sow and lightly press in.
10-30 days from end of chilling period
Stratify for 30-60 days. Sow in a container, cover with a plastic bag and refrigerate, or mix seed with damp clean sand or vermiculite, bag, and refrigerate at 35-40F. Check often for germination and maintain a lightly moist medium. Transplant any seedlings as they germinate. After the chill period, sow into soilless media and keep at 60-65F.
Direct sow in fall to early spring into prepared bed or wintersow into pots in the shade, covered with a thin layer of clean sand and a wire screen to keep out mice and voles. Check for water, keeping evenly moist.
PLACEMENT & CULTIVATION
Rudbeckia triloba, also known as branched coneflower, is a widespread native wildflower that is a beautiful addition to borders and meadow plantings, where its small gold daisy flowers held on mahogany stems weave in and out among other summer and fall-blooming perennials. Excellent for bird-friendly gardens, it draws many birds, including goldfinches, to the seeds in fall. Deadhead or cut for bouquets. A biennial to a short-lived perennial that self-sows for a continual presence in hospitable gardens.
1" a week. Tolerates some drought once established.
Prefers neutral but will tolerate slightly acidic to slightly alkaline
Mix in about 2" of compost before planting, and top dress with an additional inch each spring.
Diseases & Pests:
Avoid fungal troubles with proper spacing and plant in a location with good air circulation.
When to Cut for Bouquets:
Harvest when flowers are fully open.