Hyacinth Bean? I know that one well.

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Hyacinth Bean

Lablab purpureus

Zones 9–13

Growing

Hyacinth bean is a vigorous climbing vine and needs vertical support, such as a sturdy trellis or fence, for its sprawling growth. Once the soil has warmed and the danger of frost has passed, sow seeds directly into the garden. Prepare a site with rich, well-draining soil. If you are growing the variety for its pods, harvest them while still tender for curries or salads.

When the pods mature and the seeds harden, harvest them for long-term use by drying them thoroughly. The dried seeds can be used in traditional herbal preparations or fermented and pickled. To use the beans fresh, soak them overnight and remove the outer seed coat to reach the soft, inner part. The seeds should not be consumed raw.

Stats
Sunfull sun
Watermedium
Grow time90–150 days
Height>6ft
Spacing12–24in
Light
Full sun✓
Part shade✓
Shade✓
Traits
Life cycleannual
Categorylegume
Growth habitvine
Seasonwarm
Frost tolerancetender
Heightover 6ft
Spacing12–24in
Days to maturity90–150
Days to bloom45–90
Native us✗
Growing
Watermedium
Drainagewell drained
Soil ph min6.0
Soil ph max7.5
Propagation
Seed✓
Cutting✗
Division✗
Graft✗
Tuber bulb crown✗
Transplant✗
Container ok✓
Pollinationself fertile
Pollinator friendly✓
Toxic parts
Leaves✓
Seeds✓
Raw✓
Spreadself seeds
Deer resistant—
Drought tolerant✓
Toxic to
People✓
Pets—
Livestock✓
Post harvest
Wash before storing✗
Ripens off plant✗
Curing daysnone
Shelf life3–7d
Storage methods
Room temp✗
Cool dark✓
Fridge✓
Freeze✓
Can✓
Dry✓
Ferment pickle✓
Blanch before freezing✓
Bloom
Length6–12wk
Colors
White✗
Yellow✗
Orange✗
Red✗
Pink✗
Purple✓
Blue✗
Green✗
Fragrant✗
Reblooms✗
Deadhead✓
Cut flower✓
Dried flower✓
Invasive
Statusnone
Regions
Northeast✗
Southeast✗
Midwest✗
Plains✗
Southwest✗
Mountain west✗
Pacific northwest✗
California✗
Hawaii✗
State noxious✗
Escapes cultivation✗
Cover
Mat heightover 12in
Spread ratefast
Foot trafficnone
Evergreen✗
Lawn alternative✗
Mowable✗
Between pavers✗
Erosion control✗
Weed suppression✗
Under trees✗
Calendar, zone 7
Not suited to zone 7. Grows in zones 9–13.