Coneflowers are sounding pretty perfect now, aren’t they? … Although it does not reseed quite as aggressively as Rudbeckia, older varieties of coneflower can reseed themselves. Newer hybrids usually do not produce viable seed and will not self sow. These newer hybrids are also not of much interest to birds, either.

Will coneflowers spread?

Spacing: Coneflowers are clumping plants. One plant will tend to get larger, but it will not spread and overtake the garden via roots or rhizomes. … If a plant is estimated to grow to 18 inches wide, leave 18 inches between plants. Because Echinacea establish deep taproots, you need to plant them where you want them.

Are coneflowers self seeding?

In fall, break seed heads apart, sprinkling seeds where you want more coneflowers to grow. Or let coneflowers self-seed on their own. Most coneflowers grown from seed won’t flower until their second growing season.