Seed Swaps

Hyacinth bean        

Lablab purpureus

  • 42 plantings
  • 13 for swap
  • 4 wanted
  • 57 stashed

Hyacinth bean is part of the Dolichos genus and its scientific name is Lablab purpureus. The purpureus part of this plant's botanical name means 'purple'.

Beautiful ornamental with stems and bean pods that are nearly metallic purple. All parts of the plant are technically edible, but dried bean pods must be boiled twice to be safe to eat.

As a legume, it will help fix Nitrogen in the soil, and prefers to be in low Nitrogen soil.

This variety typically blooms in the following colours:   Blue-violet and   Lavender (floral) and   Medium red-violet. This variety typically produces fruit in the following colours:   Palatinate purple and   Pansy purple. The leaves of this particular variety normally show as   Grade 1 Paint Green and   Palatinate purple

Hyacinth bean grows as an annual/perennial and is a flowering semi-edible legume / flower. Being an annual / perennial plant, it tends to grow either as a single season plant, or a plant that can stay in your garden for many years.

Hyacinth bean is known for growing to a height of approximately 1.95 feet (that's 60.0 cm in metric) with a climbing habit. This plant tends to bloom in mid autumn, followed by first harvests in early winter.

Try planting Hyacinth bean if you'd like to attract butterflies, bees and birds to your garden.

Consider Ruby Moon, Moonshadow, White, Highworth and Red leaved to grow as they are very popular with home gardeners.

Typically, Hyacinth bean is normally fairly low maintenance and can thus be quite easy to grow - only a basic level of care is required throughout the year to ensure it thrives. Being aware of the basic growing conditions this plant likes (soil, sun and water) will result in a strong and vibrant plant.

This plant info is provided by the myfolia gardener's wiki. All details about Hyacinth bean have been kindly provided by our members.

How to grow Hyacinth bean

  • Full Sun

  • Full Sun

  • Medium

Drought tolerant once established. The closer you live to the equator, the larger they can grow – and the stronger trellis you’ll need.

Plant in a location that enjoys full sun / full sun and remember to water moderately. Zone 4 to 11 are typically the USDA Hardiness Zones that are appropriate for this plant (although this can vary based on your microclimate). Hyacinth bean requires a loamy, clay and silty soil with a ph of 6.1 - 7.8 - it grows best in weakly acidic soil - weakly alkaline soil. Keep in mind when planting that Hyacinth bean is thought of as tender, so it is imperative to wait until temperatures are mild before planting out of doors.

See our list of companion Plants for Hyacinth bean to see which plants you should plant in close proximity to encourage growth.

Growing Hyacinth bean from seed

Soak seeds 12-24 hours to speed germination.

Sow seeds two inches deep and 4 to 8 feet apart where they are to stay when the soil is warm with temperature between 65 and 75 degrees Fahrenheit.

Ensure a distance of 2.60 feet (80.0 cm) between seeds when sowing - look to sow at a depth of approximately 0.39 inches (1.0 cm). Soil temperature should be kept higher than 21°C / 70°F to ensure good germination.

By our calculations*, you should look at sowing Hyacinth bean about 42 days before your last frost date .

Transplanting Hyacinth bean

Transplant when first vine appears or plant will tangle.

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Hyacinth bean is a tender plant.

By our calculations*, you should look at planting out Hyacinth bean about 90 days before your last frost date.

Seed Saving Hyacinth bean

Pick when pods turn brown
They are sometime self-seeding

How long does Hyacinth bean take to grow?

These estimates for how long Hyacinth bean takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.

Start logging and journaling your observations to participate!

Days to Germination How long does it take Hyacinth bean to germinate?
9 days

Average 9 days | Min 6 days | Max 15 days (3)

Days to Transplant How long until I can plant out Hyacinth bean?
+ 21 days

Average 21 days | Min 18 days | Max 26 days (2)

Days to Maturity How long until Hyacinth bean is ready for harvest / bloom?
+ 90 days

Average 90 days | Min days | Max days (0)

Total Growing Days How long does it take to grow Hyacinth bean?
= 120 days

When should I plant Hyacinth bean?

Our when to plant Hyacinth bean estimates are relative to your last frost date.

Enter your frost dates and we'll calculate your sowing and planting dates for you!

When to sow The number of days to sow Hyacinth bean before or after your last frost date.
42 days before Last Frost Date
When to plant out The number of days to plant out Hyacinth bean before or after your last frost date.
90 days before Last Frost Date

Hyacinth bean Etymology

The botanical epithet is from the Latin purpureus meaning “purple”

Hyacinth bean Folklore & Trivia

Food plant in Africa and India. Usually grown in the USA as an ornamental.

Other names for Hyacinth bean

Dolichos lablab, Lablab violet, Lablab violet bean, Purple Lablab, Lablab bean, Indian Bean, calavance, seim, Egyptian Bean, njahi, bulay, bataw

Dolichos Lablab

Misspellings: Lablan bean, Lablan violet, Lablan violet bean, Lablan, Purple lablan, purple lablan bean,

Latest Hyacinth bean Reviews

  • Looks great on a trellis paired with Ipomoea Alba / Moonflower! Very low maintenance. Showy nitrogen-fixer.

    5 stars

    PlantyHamchuk about growing Hyacinth bean
  • I’ve grown this plant previously, it’s remarkably beautiful and wildlife love it. I’ve never seen anything in nature to exhibit such a metallic purple! Great on a sturdy trellis.

    5 stars

    PlantyHamchuk about growing Hyacinth bean
  • I find this a trouble free plant that just continues to grow from year to year, providing excellent ground cover, smothering weeds, even managing to suppress vigorous grasses during the wet season.

    5 stars

    Carol about growing Lablab

See all Hyacinth bean reviews and experiences »


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