Echinacea 'Green Twister' can indeed be grown from seed. 1. Use a well-draining growing medium 2. Plant the seeds 8–10 weeks before the date of the frost 3. Lightly sprinkle the seeds without covering them 4. Use bright but indirect light once the seedlings germinate. 5. Maintain a temperature between 65 and 70°F 6. Water the plants, but avoid letting them sit in water. 7. After the new leaves emerge, plant them in the ground. 8. Give them whole light and space them 18 to 24 inches apart. 9. To control weeds and maintain soil moisture, apply mulch.