Ornamental Climber
Turquoise Lagoon Sweet Pea is a climbing cultivar of Lathyrus odoratus that reaches 6 feet tall and blooms reliably from spring through summer across hardiness zones 2 to 11. This frost-tolerant variety germinates quickly in cool soil (50 to 70°F) and reaches bloom in just 84 days from seed, rewarding patient gardeners with weeks of fragrant flowers. Its compact 8-inch spread and full-sun preference make it a practical choice for trellised gardens, and its resistance to deer browsing means your blooms stay intact.
Full Sun
Moderate
2-11
72in H x 8in W
Annual
High
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Turquoise Lagoon's real strength lies in its extended bloom window stretching from March through August, giving you months of cut flowers without replanting. The variety thrives in moderate moisture and adapts across an unusually wide hardiness range, from cold zone 2 gardens to warm zone 11 climates. Best of all, it attracts pollinators while repelling deer, so you get vibrant garden activity without the frustration of wildlife damage.
Sweet peas are grown primarily for their cut flowers. The long stems and extended bloom season make Turquoise Lagoon valuable for cutting arrangements, and the fragrance carries well indoors. Gardeners trellis them vertically to maximize blooms and save space.
Sow seeds in deep pots 4 to 6 weeks before your planned outdoor planting date. Keep soil at 55 to 65°F until germination, which typically occurs within 5 to 30 days. Once seedlings emerge and before leaves unfurl, move them to cold conditions outdoors to harden off before transplanting.
Move hardened-off seedlings outdoors after the danger of frost has passed. In zone 9 and warmer climates, this variety can also be sown directly in late autumn for earlier spring blooms.
Direct sow seeds 3 to 4 weeks before your last spring frost in zones 2 to 8. In warmer climates (zone 9), sow in late autumn to avoid heat stress.
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