Clasping Coneflower Seeds

Clasping Coneflower seeds need light to germinate, so scatter them directly in the garden in early spring and press them lightly into the soil. A fall sowing works even better, because the seeds go through natural cold stratification over winter and sprout earlier in spring. Germination takes 2-3 weeks when soil temperatures are between 60–70°F (15–21°C). Once seedlings reach 3–4 inches, thin them to about 10-15 inches apart to avoid crowding.

Full sun is non-negotiable for rudbeckia amplexicaulis — at least 6 hours a day. Clasping Coneflower handles poor soil conditions, however, give it well-drained soil with average fertility and you'll get taller plants and more flowers. Water consistently for the first few weeks after germination to help roots establish. Once rooted, the plant can survive drought, and need occasional watering.

Clasping Coneflower is low maintenance. All it needs is deadheading to prolong the blooming season. Don’t add fertilizer unless your soil is genuinely poor. Don’t add too much nitrogen, as it produces more leaves and fewer flowers. For cut flowers, take stems when petals are fully open and the cone is still firm. They last 7–10 days in a vase.