General Plant Information (Edit)
Plant Habit: Vine
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Minimum cold hardiness: Zone 9b -3.9 °C (25 °F) to -1.1 °C (30 °F)
Plant Height: 6 - 8 feet
Flowers: Showy
Fragrant
Flower Color: Purple
Bi-Color: Pink and white
Other: usually purple, some bi-color pink and white
Flower Time: Summer
Late summer or early fall
Dynamic Accumulator: Nitrogen fixer
Wildlife Attractant: Bees
Butterflies
Hummingbirds
Resistances: Drought tolerant
Toxicity: Fruit is poisonous
Propagation: Seeds: Needs specific temperature: 65 to 85F
Days to germinate: 5 to 14
Sow in situ
Other info: sometimes self-seeds
Pollinators: Various insects
Containers: Needs excellent drainage in pots

Image
Common names
  • Purple Hyacinth Bean
  • Dolichos Bean
  • Australian Pea
  • Indian Bean
  • Tonga Bean
Botanical names
  • Accepted: Lablab purpureus
  • Synonym: Dolichos lablab

Photo Gallery
Location: IL
Date: 2009-09-14
Thought this was so pretty with the late afternoon sun backlighti
Location: Barsons Greenhouse, Westland, Michigan
Date: 2019-08-19
Location: Barsons Greenhouse, Westland, Michigan
Date: 2019-08-19
Location: central Illinois
Date: 2009-08-22
Location: IL
Date: 2015-10-21

Date: 2013-05-26
Flowering bloom visible, focus is the leaf.
Location: Barsons Greenhouse, Westland, Michigan
Date: 2019-08-19
Location: Barsons Greenhouse, Westland, Michigan
Date: 2019-08-19
Location: Barsons Greenhouse, Westland, Michigan
Date: 2019-08-19
Location: RHS Hyde Hall, Essex, UK.
Date: 2022-08-22
Location: Kyle, Texas
Date: 2017-09-21
Fast growing and heavy bloomer
Location: My backyard
Date: August 27, 2010
Blooms and Seedpods of Purple Hyacinth Bean Vine
Location: Jersey City, NJ
Date: 2014-08-19
community garden
Location: Mentor
Date: 2018-09-19
Location: Roberta Georgia
Date: August
with humming bird
Location: Chippewa, PA
Date: 2015-09-21
Location: RHS Hyde Hall, Essex, UK.
Date: 2022-08-22
Location: Plano, TX
Date: 2013-10-02

Courtesy Outsidepride
  • Uploaded by vic
Location: central Illinois
Date: summer 2007
Location: Lincoln, NE
Date: 2011-10-18
Location: Dearborn Heights, MI
Date: 2010-10-04
My Yard
Location: Dearborn Heights, MI
Date: 2010-10-04
My Yard
Location: Southeast Asia, photo by PlantSister used with permission
Date: 2014-01-24
Seed pods and immature seeds are edible. When mature, the seeds c
Location: Mentor
Date: 2018-09-19
Location: Mentor
Date: 2018-09-19
Location: central Illinois
Date: 2014-01-16
Location: Jersey City, NJ
Date: 2014-08-19
Community garden
Location: western Kentucky
Date: Fall 2010
Hyacinth Bean seedpod
Location: Indiana zone 5
Date: 2013-09-09
Location: Fort Boonesborough, Boonesborough, KY
Date: 2017-09-14

Paul Henjum
Location: Rose garden
Date: 2011-02-11
Location: Ingleside. Illinois
Date: 2021-08-01
Location: Plano, TX
Date: 2013-09-24
Location: Brooklyn Botanic Garden
credit: Raffi Kojian
Location: IL
Date: 2011-09-02
It ate the arbor over the garden gate.
Location: Plano, TX
Date: 2013-07-30
Location: Lebanon, Tennessee
Date: 2014-09-05
Beautiful and distinctive vine providing privacy too!
Location: Lebanon, Tennessee
Date: 2014-09-14
Beautiful fall color in flowers and bean pods
Location: central Illinois
Date: 10-8-06
Location: My back deck
Date: June 6, 2011
Purple Hyacinth Bean Vine

Date: June 2, 2011
Lablab \"Beans\"
Location: Jacksonville, TX
Date: Sep 2011
Location: central Illinois
Date: 9-8-08
Location: Fairfax, VA | July, 2022
Date: 2022-07-24
Location: central Illinois
Date: summer 2006
Location: Dearborn Heights, MI
Date: 2010-10-04
My Yard
Location: My garden in Belgium
Date: 2011-07-02
Location: Dearborn Heights, MI
Date: 2010-10-04
My Yard
Location: Chippewa, PA
Date: 2015-05-16
New transplant
Location: Illinois State University Horticultural Center, Normal, IL
Date: 2010-11-23
Location: Western Kentucky
Date: September 2010
One very ripe seed pod

Date: 2016-12-07
Location: Brown City, MI
Location: central Illinois
Date: 9-29-09
Location: Chippewa, PA
Date: 2015-03-31
Location: Plano, TX
Date: 2013-10-10
Dozens of seedpods
Location: central Illinois
Date: 10-8-11
Location: Plano, TX
Date: 2013-09-24
Location: Plano, TX
Date: 2013-09-24
Location: Plano, TX
Date: 2013-09-24
Location: Mobot, St L.
Date: 2017-08-09
Location: Texas
Hyacith Bean
Location: Plano, TX
Date: 2013-03-12
Less than a week old
Location: central Illinois
Date: 2005-09-06
Location: Plano, TX
Date: 2013-09-10
First flowers
Location: Plano, TX
Date: 2013-09-27
More beautiful early morning blooms
Location: Louisa, VA
Date: May 2017
Location: My backyard
Date: May 2010
Foliage and Blooms

Date: August 2010
Foliage of Lablab purpureus
Location: Plano, TX
Date: 2013-09-18
Location: Plano, TX
Date: 2013-09-18
Unopened flowerbuds
Location: Plano, TX
Date: 2013-09-18
Location: Middle Tennessee
Date: 2011-10-13
Location: West Valley City, UT
Date: 2013-07-16
Location: West Valley City, UT
Date: 2013-07-16
Location: Cambridge University Botanic Garden
Date: August
credit: Magnus Manske
Location: Middle Tennessee
Date: 9/7/2011
Location: Plano, TX
Date: 2013-06-12
Start from seed a couple of months ago
Location: central Illinois
Date: 2005-09-08
Location: Illinois State University Horticultural Center, Normal, IL
Date: 2010-07-27
This picture really shows how it sends out climbing tendrils, loo
Location: West Valley City, UT
Date: 2013-05-02
Location: West Valley City, UT
Date: 2013-05-02

Date: 4000-08-01
USDA
Location: Plano, TX
Date: 2013-10-10
This plant is tagged in:
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Comments:
  • Posted by Sharon (Calvert City, KY - Zone 7a) on Jan 9, 2012 12:57 AM concerning plant:
    This vine surprised me. Here in the heat of western Kentucky most vines die out by the end of July, but not the Purple Hyacinth Bean vine. It seemed to grow and bloom forever, long after the leaves had fallen from the deciduous trees. It's a great vine for covering fences or a trellis quickly, producing purple flowers and those striking electric-purple colored seed pods. Lablab bean is a good choice for a quick screen, though. It grows so fast, has beautiful, fragrant flowers that attract butterflies and hummingbirds, and it even produces edible leaves, flowers, and roots. Dry seeds are poisonous due to high concentrations of cyanogenic glucosides. I particularly like it because of the numbers of hummingbirds it attracts.
  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Nov 8, 2011 8:10 AM concerning plant:
    HBV begins to bloom mid-summer and produces many seed pods by late Fall. Seeds are numerous and easy to dry and save.

    Soak seeds overnight before planting to speed up germination.
  • Posted by plantladylin (Sebastian, Florida - Zone 10a) on Sep 9, 2011 6:11 PM concerning plant:
    Purple Hyacinth Bean is a fast growing annual vine with bright purple, bean-like seedpods and pretty pink flowers that attract butterflies and hummingbirds. The dried beans contain high concentrations of cyanogenic glucosides and are only edible after prolonged boiling.
  • Posted by Zencat (West Valley City, Utah - Zone 7a) on May 2, 2013 9:01 AM concerning plant:
    These took about 10 days to appear.
Plant Events from our members
vbprog On April 18, 2015 Transplanted
Put one of them against the garden fence.
vbprog On March 18, 2015 Plant emerged
vbprog On March 7, 2015 Seeds sown
vbprog On October 20, 2014 Obtained plant
Received seed from @Evan
lovesblooms On April 26, 2015 Seeds sown
piksihk On January 24, 2019 Miscellaneous Event
Collected seeds
piksihk On February 12, 2017 Seeds sown
Seeds collected 11/16
antsinmypants On May 23, 2021 Seeds sown
DS in Garden two & in arch garden
dnrevel On April 9, 2021 Seeds sown
Planted 6 more seeds in individual pots, putting in mini-greenhouse.
NOTE: needs specific temperature: 65 to 85F to germinate. Days to germinate: 5 to 14
dnrevel On April 8, 2021 Seeds sown
Soaked seeds for 24 hours before planting in small pots and in DT window box tray. NOTE: needs specific temperature: 65 to 85F to germinate. Days to germinate: 5 to 14
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