Castanospermum australe

Black Bean Tree

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Tropical Australian tree with glossy dark green leaves and yellow-red flowers. Raw seeds are toxic, but cooked seeds are edible. Suits large indoor spaces or sheltered gardens well.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
info

Plant Details

Common Name Black Bean Tree
Family Fabaceae
Genus Castanospermum
Species Australe
Origin Australia
Blooming Yellow flowers with red markings, late spring to summer
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Rich, well-draining potting mix with peat and perlite

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Watering

Keep soil consistently moist during growing season. Reduce watering in winter. High humidity preferred.

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Sunlight & Care

Bright indirect light indoors; full sun outdoors. Avoid scorching midday heat for young plants.

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Fertilization

Apply balanced liquid fertilizer monthly during spring and summer growth periods.

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Pruning

Prune to maintain shape or control height. Remove spent flowers to encourage new blooms.

Pest Control Aphid Scale Insect Spider Mite Thrip

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 4 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
50° – 90°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
45% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
1000 – 25000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 3500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
20% – 65%
% volumetric
Water content in the growing medium
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Soil EC
400 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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