Indian bean tree vs Japanese pagoda tree

Indian bean tree and Japanese pagoda tree are often considered for the same spot in the garden (shade, specimen, flowers, pollinator friendly). The data below shows where they differ: size, hardiness, care, toxicity and price.

Indian bean tree

Catalpa bignonioides 6 m × 5 m after 10 years

A fast-growing tree with a wide, open crown, huge heart-shaped leaves, fragrant white flowers in upright panicles in early summer and long, cigar-like…

Large tree

Full sun

Part shade

Japanese pagoda tree

Styphnolobium japonicum 6 m × 4 m after 10 years

A large shade tree with a rounded crown that flowers in the height of summer, when few other trees do, with creamy white, scented panicles that bees…

Large tree

Full sun

Part shade

Key differences

Indian bean tree grows faster than Japanese pagoda tree.
Japanese pagoda tree tolerates drought better than Indian bean tree.
Indian bean tree also takes heavy clay, Japanese pagoda tree needs a loose, free-draining soil.
Japanese pagoda tree needs less care than Indian bean tree.

Which one to choose?

Indian bean tree is the better choice if you want quick results or the soil is heavy clay.

Japanese pagoda tree is the better choice if you cannot water regularly or you have little time for care.

Watch out for

Indian bean tree

The wood is brittle: storms easily break branches, and wind and hail tear the big leaves, so it belongs in a sheltered spot. Its main disease is verticillium wilt: branches suddenly wilt and die back and the tree may be killed, there is no cure, and a dead tree should not be replaced with another catalpa or other susceptible species. Powdery mildew, leaf spots and aphids can also occur. It leafs out very late, only towards May, and drops its leaves early. The crown of the globe form flattens and opens with age; regular winter cutting back keeps its shape.

Japanese pagoda tree

The falling flowers, fleshy pods and leaves make a lot of litter and stain paving. The wood is brittle, so strong wind and heavy snow can break branches; train a sound branch structure while the tree is young. Shoots of young trees can be killed back in hard winters, and cankers may follow frost damage. It has no serious pests or diseases.

The data side by side

Feature	Indian bean tree	Japanese pagoda tree
Group	Large tree	Large tree
Size after 10 years	6 m × 5 m (uncertain)	6 m × 4 m (uncertain)
Ultimate size	9–18 m × 6–15 m	12–23 m × 12–23 m
Growth rate	Fast	Medium
Light	Full sun, Part shade	Full sun, Part shade
Soil	Average garden soil, Clay, Sandy, Calcareous	Average garden soil, Sandy, Calcareous
Hardiness	down to -29 °C (USDA 4, RHS H7)	down to -29 °C (USDA 4, RHS H7)
Heat tolerance	High	High
Foliage	Deciduous	Deciduous
Flowering	June–July, white	July–August, white
Water need	Medium	Medium
Drought tolerance	Medium	High
Maintenance	Medium	Low
Planting distance	800 cm	1000 cm
For dogs	no data	Toxic (uncertain)
For cats	no data	Toxic (uncertain)
For children	no data	Toxic

Prices are rounded, indicative values. Toxicity data is for information only. If your pet or child has eaten a plant, contact a vet or a doctor. Data updated: October 17, 2026

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