Black Knight Sweet Pea Seeds - Lathyrus Odoratus, 10 seeds

Quantity: 10 Seeds / pack

Black Knight sweet pea (Lathyrus odoratus) is grown for its dramatic deep mahogany-maroon blooms — so dark they read as near-black in the garden. A fragrant climbing annual, it adds dark contrast to trellises, fences, and bouquets alike. Note: sweet pea seeds are harmful if eaten; grow for flowers only.

Why choose our seeds?

• Striking near-black blooms for dark-flower arrangements
• Classic sweet pea fragrance on long cutting stems
• Vigorous climber for trellises, arches, obelisks, and large pots

How to grow Black Knight Sweet Pea seeds

Choose Your Planting Method

• Indoors: Start 4–6 weeks before the last frost in deep pots.
• Outdoors: Direct sow in early spring as soon as the soil can be worked.

Prepare Your Materials

• Seed-starting trays or pots (if indoors)
• Well-draining potting mix
• Spray bottle for misting
• A trellis, fence, or netting ready at planting time

Sowing the Seeds

• Nick each seed coat with nail clippers and soak overnight in warm water.
• Sow 1/2 to 1 inch deep.

Provide the Right Conditions

• Light: Full sun to part shade.
• Temperature: 55–70°F (13–21°C); cool soil gives the best germination.

Germination

• Seedlings emerge in 7–14 days (sometimes up to 21 days).
• Keep soil evenly moist, never soggy.

Transplanting

• Plant out in early spring while the weather is cool.
• Space seeds 2–3 inches apart, then thin to 5–6 inches; set transplants about 9 inches apart.
• Train stems onto the support early.

Care Tips

• Sun: Full sun; afternoon shade extends bloom in hot climates.
• Water: Water regularly; sweet peas like rich, well-drained soil.
• Fertilizer: Feed every two weeks once flowering begins.
• Pinch the growing tips after the second leaf pair opens, and deadhead or cut blooms often — picking keeps new flowers coming.

Bloom Time:

Early summer to late summer.