Moreton Bay Chestnut (Castanospermum australe)

Common names:
Give a thumbs up Moreton Bay Chestnut
Give a thumbs up Morten Bay Chestnut
Give a thumbs up Morton Bay Chestnut
Give a thumbs up Black Bean Tree

General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Soil pH Preferences: Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Minimum cold hardiness: Zone 9b -3.9 °C (25 °F) to -1.1 °C (30 °F)
Maximum recommended zone: Zone 11
Plant Height: 12 to 125 feet, but usually kept at 26 feet or shorter.
Plant Spread: 12 - 25 feet
Leaves: Evergreen
Fruit: Showy
Other: 8 inch woody pods, each containing 3 to 5 lage, bean-like seeds.
Flowers: Showy
Flower Color: Orange
Other: Reddish-orange
Bloom Size: 1"-2"
Flower Time: Spring
Late spring or early summer
Late summer or early fall
Suitable Locations: Houseplant
Uses: Erosion control
Shade Tree
Useful for timber production
Dynamic Accumulator: Nitrogen fixer
Wildlife Attractant: Birds
Toxicity: Leaves are poisonous
Fruit is poisonous
Propagation: Seeds: Needs specific temperature: 65ºF to 75ºF
Pollinators: Birds

Paul Venter [CC BY-SA 3.0 (

Photo gallery:
Location: Honeydew, Johannesburg, South AfricaDate: 2011-Dec -2Paul Venter [CC BY-SA 3.0 (
By greene
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Location: Australian rainforestDate: 2010-11-09Image by Tatiana Gerus from Brisbane, Australia [CC BY 2.0 (https
By greene
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Posted by sallyg (central Maryland) on Feb 25, 2020 9:32 PM

I have only seen this for sale once here. Baby plants may still have a big green 'bean' showing at the soil level, almost like an avocado pit. Quite novel.

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Discussion Threads about this plant
Thread Title Last Reply Replies
What plant is this? by polaatx2 Jan 27, 2019 8:20 PM 8
Need help in plant identification! by kickingdirtt Jan 10, 2017 8:38 PM 11
ID Lucky Bean by Bubbles Jun 2, 2012 4:14 PM 0
Austrailian black bean by Taylor696 Aug 29, 2010 8:38 AM 0

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