Early in the season, the foliage is what stands out, being dark green with a reddish maroon overlay. When it flowers, the blooms are stunning--a dark velvety crimson, one of the richest, warmest colors I've seen. Relatively tall 16-18" and large-flowered, Black Prince is easy to grow and simply astounding with other intense colors like silene or lobelia.
Germination: 7-14 days
Germination Temperature: Optimum soil temperatures 70-75ºF
Seed Planting Depth: Sow on the surface and lightly press in, seeds need light to germinate
Starting Indoors: Start indoors 6-10 weeks before the last frost. Provide 65-75ºF soil temperature. Transplant after last frost, 10-12” apart
Sowing Outdoors: Direct sow outdoors 2 weeks before the last frost. Sow 3-5 seeds every 3-12"
Growth Habit: Columnar
Height and Width: 16-18” by 10-12”
Spacing: 10-12" apart
Light Needs: Full sun, light shade
Soil Needs: Average, well-drained
Approximate days to flower from seed: 100-110 days
Uses: Cut Flowers, containers, bedding plants, attracts pollinators
Care: Water seedlings regularly until established. Amend soil with compost before transplanting. Cut back stems as the blooms fade, this encourages more flower production. Fertilize with a liquid fertilizer every few weeks.