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Catalpa bignonioides

Catalpa bignonioides

Deciduous · Full Sun

Mature size: 8m–15m high × 6m–12m wide

  • Deciduous
  • Full Sun
  • Mature height8m–15m
  • Mature width6m–12m
  • Frost Hardy
  • Flowers

Most loved for its large heart-shaped leaves, showy clusters of white orchid-like flowers in summer, and long hanging seed pods that add ornamental interest.

Regular price $280.00
Sale price $280.00 Regular price
Tax included. Shipping calculated at checkout.
Pot size
Available batches
Size: 40cm/45L
Current height guide
Please enquire
Pot size
40cm/45L

Approximate only. Minimum height important? Confirm with us.

Height guide & disclaimer

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you must confirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Quantity

Order multiple sizes

Mix pot sizes and batches in one order.

Size / batchEachQuantity
40cm/45LApprox. height: Approx. 1.3m – 1.9m$280.00
100LApprox. height: Approx. 2.8m – 4.0m$700.00
150LApprox. height: Enquire for current heights$670.00
800LApprox. height: Enquire for current heights$5,600.00

Height guide & disclaimer

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you must confirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Subtotal before discounts & delivery$0.00

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    About Catalpa bignonioides

    Catalpa bignonioides, the Indian Bean Tree or Southern Catalpa, is a deciduous shade tree with very large heart shaped leaves and a broad rounded canopy. White bell flowers marked with purple and yellow appear in early summer, followed by the long slender seed pods that give the tree its common name.

    It grows in full sun in most soils, including compacted urban ground, and puts on about 60 centimetres to 1 metre a year while young. Frost is no issue, since it survives heavy and frequent frost without damage. Cool temperate and warm temperate districts suit it, and it is drought tolerant once established.

    It is used as a shade tree in parks, on wide verges, in avenue plantings and as a feature in larger gardens. The dense leaf cover throws deep shade in summer, then drops to let winter sun through. Councils plant it where a bold, fast establishing canopy is needed on a difficult site.

    Frequently Asked Questions

    About Indian Bean Tree

    How big does Catalpa bignonioides grow?

    In Australian conditions expect roughly 8 to 12 metres tall and 6 to 10 metres wide at maturity, forming a broad, rounded canopy on a short trunk. It reaches useful shade size quickly, adding about 60 centimetres to 1 metre a year early on before slowing. Allow generous room, as this is not a small garden tree.

    Is it evergreen or deciduous?

    Deciduous. It drops all its leaves through the colder months and leafs out late in spring, later than most deciduous trees. The long seed pods hang on through winter and become a feature of the bare tree. That late leaf flush is normal for the species and not a sign of a problem.

    When does it flower?

    Early summer, generally November into December, once the canopy is fully out. The white bell shaped flowers are held in upright clusters and marked inside with purple spots and yellow stripes. Trees usually need several years in the ground before they flower well, and flowering is heaviest in an open, sunny position.

    Does it need sun or shade?

    Full sun. The tree develops its best form, heaviest flowering and densest canopy in an open position with all day light. It tolerates part shade but grows more openly and flowers less. It also handles reflected heat, exhaust and compacted soil, which is why it turns up in streetscapes and car park islands.

    Is it a good street tree?

    It is widely used as one. It tolerates pollution, compacted soil and root restriction, establishes quickly and casts heavy shade. Two things to plan for: the large leaves and long pods create seasonal litter, and the broad canopy needs clearance from overhead lines. Given room and a decent planting pit, it performs reliably.

    Is it frost tolerant?

    Yes, very. It survives heavy and frequent frost without damage and is at home in cold inland districts such as the tablelands, Canberra and central Victoria. Being deciduous, it is dormant and leafless through the coldest part of the year. Late spring frosts can burn early growth, and the tree reshoots without setback.

    How do I care for an Indian Bean Tree?

    Water deeply through the first two or three summers, after which it manages on rainfall in most temperate districts. Mulch out to the dripline and keep grass off the root zone while it is young. Prune in winter to lift the canopy and remove crossing limbs. Rake up leaves and pods where litter matters.

    Key growing information
    Mature height8m to 15m (approx.)
    Mature width6m to 12m
    PositionFull Sun
    Growth per year60cm to 100cm per year (approx.)
    FrostFrost Hardy
    FoliageDeciduous (Defoliates throughout colder months)
    FormBroad · Rounded
    UsesShade Tree · Feature Tree · Avenue Planting · Council or Civic Landscapes
    Foliage

    Deciduous (Defoliates throughout colder months)

    Position
    • Full Sun
    Form
    • Broad
    • Rounded
    Use
    • Shade Tree
    • Feature Tree
    • Avenue Planting
    • Council or Civic Landscapes
    Mature height
    8m to 15m (approx.)
    Mature width
    6m to 12m
    Catalpa bignonioides — project image 1

    Planting Information

    How To Plant Your Catalpa bignonioides

    Site: Choose a well-drained position in full sun to part shade with room for the canopy to develop.

    Soil preparation: Enrich the planting area with quality compost and aged manure for a strong establishment phase.

    Hole: Dig twice as wide as the root ball and the same depth.

    Planting: Position level with the surrounding soil, backfill gently, firm in, then water deeply to settle the roots.

    Recommended Planting Spacing For Your Catalpa bignonioides

    Feature tree: 3 to 4 metres apart to allow the full canopy and form to develop.

    Avenue planting: 3 metres apart for a uniform soft-textured avenue.

    Catalpa bignonioides is expected to grow 60cm to 100cm per year (approx.).

    • Fast Growth Rate

    Long Term Care For Your Catalpa bignonioides

    Watering: Water deeply twice weekly through the first 12 months. Once established, reduce to once weekly in dry periods. Mulch helps maintain consistent moisture.

    Mulching: Apply a 5 to 7 centimetre layer of organic mulch over the root zone, keeping it 5 centimetres clear of the trunk.

    Pruning: Minimal pruning required. Light tip prune in late winter to maintain shape, and remove lower branches as the tree grows to develop a clean feature trunk.

    Fertilising: Apply a slow-release general-purpose fertiliser in early spring and again in autumn for steady growth and consistent foliage colour.

    Pest and disease: Hardy against most pests and diseases. Occasional scale or caterpillar inspection in warm humid conditions is all that's needed.

    Planting Your Catalpa bignonioides in Different Soil

    Catalpa Bignoides performs best in well-drained loam or sandy loam with a slightly acidic to neutral pH. Adaptable to a wide range of soils when drainage is improved with organic matter.

    Sandy soil: Free-draining and ideal. Mulch well to maintain consistent moisture.

    Clay soil: Improve drainage with gypsum and organic compost before planting.

    Loam: The preferred soil for steady root development and consistent growth.

    pH: Slightly acidic to neutral preferred. Mulch with composted leaf litter to maintain levels naturally.

    Catalpa bignonioides — project image 1

    Uses in my Garden

    Uses in my Garden

    • Shade Tree
    • Feature Tree
    • Avenue Planting
    • Council or Civic Landscapes

    Catalpa bignonioides works in an:

    • Cottage Garden – romantic mix of flowers, colour, and texture.
    • Woodland Garden – layered, naturalistic design under dappled light.
    • Heritage / Traditional Garden – timeless, classic plantings for period homes.

    Is Catalpa bignonioides Evergreen or Deciduous?

    Catalpa bignonioides is an Deciduous (Defoliates throughout colder months) Tree

    Mature Height & Width

    Mature Height: 8m to 15m (approx.)

    Mature Width: 6m to 12m

    Catalpa bignonioides is expected to grow 60cm to 100cm per year (approx.).

    Growth Rate of Catalpa bignonioides

    Catalpa bignonioides is expected to grow 60cm to 100cm per year (approx.).

    They are considered to have a:

    • Fast Growth Rate

    Frost Tolerance & Ideal Climate to plant Catalpa bignonioides

    Is Catalpa bignonioides frost tolerant?

    Catalpa bignonioides is Frost Hardy – Survives heavy and frequent frost without damage.

    Does Catalpa bignonioides Flower?

    Catalpa bignonioides produces large clusters of showy white trumpet-shaped flowers in late spring to early summer. Marked with yellow and purple speckling inside the throat, these striking blooms create a bold, ornamental display above the broad, heart-shaped foliage.

    Does Catalpa bignonioides flower?

    • Yes - Flowers

    Flowering Period:

    • Summer

    Flower Type:

    • Bell-shaped

    Flower Colour:

    White

    Is Catalpa bignonioides an Australian Native Tree?

    No

    Catalpa bignonioides is Native to The southeastern United States, particularly along riverbanks and moist woodlands from Georgia to Mississippi.

    What is the Wildlife Value of Catalpa bignonioides ?

    Its nectar-rich flowers attract bees, butterflies and hoverflies, while the broad canopy provides shelter for small birds. The long seed pods also support insect activity, contributing to a biodiverse and dynamic garden ecosystem.

    How much Sunlight does Catalpa bignonioides need?

    Catalpa bignonioides will thrive best in:

    • Full Sun

    Preferred Soil?

    Catalpa bignonioides performs best in well-drained loam or sandy loam soils and tolerates slightly acidic to neutral conditions. It can struggle in heavy clay or poorly drained areas unless improved with organic matter to enhance aeration and structure. Keep soil evenly moist during establishment, then transition to deep, occasional watering as the tree matures to support strong flowering and vigorous seasonal growth.

    Is Catalpa bignonioides Drought Tolerant?

    Is Catalpa bignonioides Drought tolerant?

    As a young tree it requires regular watering, but once established Catalpa bignonioides develops moderate drought tolerance. It performs best with deep, occasional watering during extended dry periods and maintains steady growth in a wide range of climates.

    Catalpa bignonioides — project image 1

    Frequently Asked Questions

    Frequently Asked Questions

    Q: What is the mature height of Catalpa bignonioides?
    A: Southern Catalpa typically reaches a mature height of 12-18 meters with a width of 6-12 meters.

    Q: Is Catalpa bignonioides drought-tolerant?
    A: Yes, once established, this deciduous tree exhibits increased drought tolerance.

    Q: What is the significance of the long slender seedpods on Southern Catalpa?
    A: The distinctive seedpods are an interesting feature of this tree, often adding ornamental value to the landscape as they dangle from the branches.

    Catalpa bignonioides — project image 1

    Compare sizes side by side

    40cm/45L

    Approx. 1.3m – 1.9m

    100L

    Approx. 2.8m – 4.0m

    150L

    Enquire for current heights

    800L

    Enquire for current heights

    Heights are approximate and vary between individual trees.

    Catalpa bignonioides is loved for its large heart-shaped leaves, showy clusters of white orchid-like flowers in summer, and long hanging seed pods that add ornamental interest.

    We take pride in supplying A+ grade advanced trees. When stock at our farm is not yet ready, we work with our trusted trade suppliers to source the best available trees for your garden.

    Plant Your Catalpa bignonioides With:

    Enriched Planting Mix (AO Certified)

    Enriched Planting Mix is a certified organic blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent, bagged in 30L. It is built to be dug through existing garden soil at planting time rather than used on its own, and the gypsum is what sets it apart from a plain compost.

    Gypsum helps break up heavy clay so water and roots can move through it, while the compost and manure return organic matter and nutrient to tired ground. The coarse bark holds structure and keeps air around the root zone, and the wetting agent keeps moisture in the soil longer after rain or watering.

    Use it when planting trees, shrubs, roses, fruit trees and exotic garden plants, particularly into clay. Dig a hole twice the width of the pot and 7 centimetres deeper, then mix roughly one third planting mix through the excavated soil. Spread 7 centimetres of that improved soil in the base before setting the plant in.

    Frequently Asked Questions

    About Enriched Planting Mix

    What is Enriched Planting Mix made from?

    It is a blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent. Each part has a job. The compost and manure supply organic matter and nutrient, the gypsum works on clay structure, the bark keeps air around the roots and the wetting agent holds moisture in the soil.

    What plants is it suitable for?

    It suits exotic garden plants, including roses, ornamental and deciduous trees, fruit trees, shrubs and perennials, and it earns its keep most on heavy clay sites. It is a planting mix rather than a potting mix, so its job is improving soil at planting time. Phosphorus sensitive natives are the one clear exception.

    Is it safe for natives?

    No, not for the phosphorus sensitive ones. The composted animal manure in this blend lifts phosphorus well above what Proteaceae such as Banksia, Grevillea, Hakea and Protea will tolerate, and the result can be leaf burn, dieback and plant death. Use the Native Potting Mix for those species, or plant them into unimproved local soil.

    Is it certified organic?

    Yes. It is a certified organic product with no chemical additives, which is why the manure and compost in it are fully composted rather than raw. That makes it sound around fruit trees and vegetable beds, and it means you are adding genuine organic matter to your soil rather than a synthetic conditioner.

    How much do I need?

    Work on roughly one third planting mix to two thirds of the soil you dug out of the hole. For a shrub out of a 200 millimetre pot that is only a few litres. An advanced tree going into a large hole will take considerably more. Judge the quantity by the volume of the hole rather than the size of the plant.

    Can I use it in pots?

    It is not a potting mix and should not be used on its own in a container. The blend is designed to be diluted through garden soil, and used straight in a pot it holds too much water and settles badly. For containers, reach for a premium potting mix, or the native mix if you are potting natives.

    Does it need to be watered in?

    Yes. Water the plant well several hours before you plant it, then water thoroughly again once the hole is backfilled and the soil firmed down. That first deep watering settles the improved soil around the root ball and drives out air pockets. Keep the water up over the first few months while the roots establish.

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