Black Knight Delphinium Seeds

Delphinium ‘Giant Pacific Series – Black Knight’ Seeds
(Delphinium cultorum)

Delphinium ‘Black Knight’ from the Giant Pacific Series produces tall spikes of deep violet to near-black flowers with dark centers. The blooms are densely packed along strong stems, creating a bold vertical display. Plants typically grow 4–6 feet tall and bloom in early to mid-summer.

This variety is known for its height, rich color, and classic delphinium form. It attracts bees, butterflies, and other pollinators and makes an excellent cut flower.

How They Grow
• Perennial
• Height: 4–6 feet
• Bloom time: Early to mid-summer
• Sun: Full sun to light shade
• Soil: Rich, well-drained

Start seeds indoors 8–10 weeks before the last frost. Lightly cover seeds and keep soil consistently moist. Transplant outdoors after frost danger has passed. Provide support or staking as plants grow tall.

In the Garden:
‘Black Knight’ delphinium adds strong vertical interest to the back of borders and cottage gardens. Its deep, dramatic color pairs well with whites, pinks, and lighter blues, creating contrast and height in mixed plantings.

All parts of the plant are toxic, use caution when growing around children, pets, and livestock.