50+ Royal Navy Blue Sweet Pea Seeds | Deep Blue Climbing Flowers for Trellis & Garden

Grow striking deep-blue blooms with 50+ Royal Navy Blue Sweet Pea (Lathyrus odoratus) seeds. This classic variety produces rich navy to midnight-blue flowers that create a bold, elegant statement in cottage gardens, cutting gardens, and decorative borders. The dramatic color contrasts beautifully with white, pink, and pastel blooms for sophisticated mixed plantings. Royal Navy Blue is a cool-season annual climber that naturally grips supports with curling tendrils. When planted in full sun and well-draining soil, it grows vigorously up trellises, fences, arches, or balcony railings, rewarding gardeners with abundant traditional pea-shaped blossoms and lush vertical growth. 50+ Royal Navy Blue Sweet Pea seeds for planting Deep navy to midnight-blue flowers Fast-growing annual climbing vine Perfect for trellises, fences, arches, and balcony railings Ideal for cottage gardens and cutting gardens Common Name: Royal Navy Blue Sweet Pea Scientific Name: Lathyrus odoratus ‘Royal Navy Blue’ Plant Type: Annual climbing vine Color: Deep navy blue Soil: Well-draining, fertile garden soil Sunlight: Full sun Watering: Regular; keep soil evenly moist (not waterlogged) Height: 6–8 feet Bloom Time: Spring to early summer (cool season) Growth Habit: Climbing / vining Use: Ornamental garden flower (not edible)