Sweet Pea – Everlasting Mixture (Perennial Zones 4-9)

Lathyrus latifolius – Everlasting Mixture (Perennial Zones 4-9)

• Growing Temp 55°F – 70°F

• Days to Maturity 70-80 days

Ease of Cultivation and uses: Everlasting Sweet Pea is a vigorous, long-blooming climber prized for its delicate, butterfly-like flowers and graceful vines. Unlike traditional annual sweet peas, this variety is a perennial, returning year after year once established. It’s easy to grow, cold-tolerant, and well-suited for gardeners of any experience level. Everlasting Sweet Pea thrives on trellises, fences, arches, and railings, creating vertical interest and a soft, romantic look in the garden. While lightly fragrant, its real strength is reliability, abundance, and longevity.

Direct Sowing: Direct sow Everlasting Sweet Pea seeds outdoors in early spring as soon as the soil can be worked, or in fall in mild climates. Plant seeds about 1 inch deep and space them 8–12 inches apart. Water well after planting and keep the soil evenly moist until germination, which typically occurs within 10–20 days. Once established, plants are quite resilient. Provide support early so vines can climb naturally as they grow.

Early Sowing for Seedlings: For an earlier start, sow seeds indoors 6–8 weeks before the last expected frost. Use deep cell trays or small pots, planting one seed per cell and covering lightly with soil. Keep at 60–70°F for best germination. Once seedlings have several true leaves and the risk of hard frost has passed, transplant them outdoors, spacing 8–12 inches apart. Water thoroughly to help roots establish.

Harvesting: Flowers can be cut once they are fully open and vibrant. Harvest in the morning for the longest vase life. Regular cutting encourages more blooms and keeps plants tidy. At the end of the season, allow some flowers to set seed if you want natural reseeding, or cut plants back to maintain a neat appearance. Established plants will return stronger each year, providing reliable vertical color for seasons to come.