Hyacinth Bean plant profile
Lablab purpureus
An annual flower for full sun.
Last updated .
When to plant
When to plant Hyacinth Bean
Hyacinth bean is a fast, heat-loving twining vine grown as an annual for its fragrant purple, pink, or white pea-like flowers and its glossy purple seedpods in late summer to fall (NC State: summer to fall). Direct sow after the danger of frost has passed, in light, moist, well-drained soil in full sun, on a sturdy trellis that can carry the vine's weight. It thrives in hot, humid climates.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Hyacinth Bean in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Soil pH
- 6 to 8
- Lifecycle
- Annual
Common problems
Watch for these
Also watch for: toxic raw seeds.
Next steps
Continue with Hyacinth Bean
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Lablab purpureus (Hyacinth Bean, Indian Bean, Lablab)
North Carolina Extension Gardener Plant Toolbox (NC State Extension). Supports general reference. Checked 2026-06-18.