Royal Scarlet Sweet Pea Seeds – Fragrant Climbing Annual

Scarlet Blooms and Fragrance for Your Garden

Royal Scarlet sweet pea (Lathyrus odoratus) brings vivid scarlet flowers, a pleasant fragrance, and fast-growing annual vines to trellises and fences. Long-stemmed blooms make lovely cut flowers, so you can enjoy their color and scent in the garden and in a vase indoors.

Plant Highlights

• Life cycle: Annual climbing vine.
• Flowers: Fragrant scarlet blooms on stems suited to arranging.
• Mature height: Approximately 72–84 inches with support.
• Bloom season: Early to late summer; flowering may continue into fall where summers stay cool.
• Garden uses: Trellises, fences, borders, cutting gardens, and containers with climbing support.
• Growing range: Listed for USDA zones 3–9 as an annual; planting time depends on local climate.

When and Where to Plant

Choose full sun and rich, well-drained soil with a pH of 6.4–7.6. In very hot climates, provide afternoon shade. Select a sheltered position away from strong winds and rotate the planting location from year to year.

In cold climates, sow outdoors in early spring as soon as the soil can be worked. In warm climates, sow from October through January for spring flowers.

How to Grow from Seed

1. Weed the planting area and loosen the top 1–2 inches of soil.
2. Sow seeds 1/2 inch deep and 2–3 inches apart, allowing 1–2 seeds per planting position. Cover the seeds; light is not required for germination.
3. Keep the soil consistently moist during germination. At 64–68°F, seedlings typically emerge in 14–21 days.
4. Thin seedlings to 5–6 inches apart and provide a trellis or wire support early.
5. Once seedlings have 3–4 pairs of leaves, pinch out the growing tip, leaving 2–3 pairs to encourage branching.

Choose Your Seed Pack

Available in 50-, 200-, and 500-seed packs. Select the quantity that suits your planting space.