Ruby Moon Hyacinth Bean

(Lablab purpureus)

Ruby Moon Hyacinth Bean is a striking ornamental climbing vine known for its vivid purple flowers, deep burgundy stems, and glossy violet seed pods. Native to tropical regions of Africa and Asia, this fast-growing plant thrives in warm weather and can quickly cover trellises, fences, and garden arches. In addition to its dramatic color, the plant attracts pollinators and adds vertical interest to garden spaces, making it a favorite in teaching gardens and pollinator landscapes.

Plant Specifications

Common Name: Ruby Moon Hyacinth Bean
Scientific Name: Lablab purpureus
Plant Type: Annual climbing vine (perennial in tropical climates)
Height / Length: 10–20 feet (3–6 m)
Spread: 3–6 feet
Sunlight: Full sun
Soil: Well-drained soil; tolerates average garden soils
Water Needs: Moderate; water regularly but avoid waterlogged soil
Bloom Time: Mid-summer through fall
Flower Color: Purple-pink
Seed Pods: Deep purple, glossy pods containing large beans

Growing Tips

• Plant seeds after the last frost once soil temperatures are warm.

• Provide a trellis, fence, or arbor for the vine to climb.

• The plant grows quickly in warm conditions and can become a beautiful living shade screen.

• Regular watering helps promote strong flowering and pod production.

Pollinator Value

Ruby Moon Hyacinth Bean flowers attract bees, butterflies, and other pollinators, making it a valuable addition to gardens designed to support beneficial insects.

Interesting Facts

• While young pods can be edible when properly cooked, many varieties are grown primarily as ornamental plants.

• The dramatic purple pods often remain on the vine into fall, adding color long after many plants fade.

• Because it grows rapidly and climbs aggressively, it’s often used in educational gardens to demonstrate plant growth and vertical gardening.

This beautiful vine combines color, height, and pollinator support, making it both an eye-catching feature and a living learning tool in the garden.