Catalpa erubescens 'Purpurea' Plants - Outdoor GROW TROPICALS
Purple Indian Bean Tree

Catalpa erubescens 'Purpurea'

£47.49 £52.99 SAVE 10%
Very hardySun-lovingLoved by pollinators
Pot size
23cm / 5L £47.49

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Description

The Catalpa erubescens 'Purpurea' is the dark-leaved counterpart to the golden Indian bean tree, a vigorous hybrid Catalpa with enormous heart-shaped leaves up to 25cm across. New foliage in spring emerges a rich deep purple-bronze, holds its dark tone into early summer, and gradually ages to a sumptuous bronze-green. White panicles of orchid-like flowers spotted with yellow and purple appear in midsummer on mature specimens, followed by long bean-like pods in autumn.

This is one of the most architectural hardy foliage plants for an exotic UK garden. The combination of huge tropical-feel leaves and a dark, brooding palette anchors any planting scheme. Like its golden sibling 'Aurea', it can be grown as a free-form tree to 6-10m or coppiced annually to a 2-3m multi-stemmed shrub with even larger, even darker leaves.

'Purpurea' is brilliant as a hero specimen at the back of an exotic mixed border, in a Hardy Exotic garden, or as the structural centrepiece of a courtyard. The dark foliage pairs beautifully with golden grasses, Pennisetum 'Fireworks', or Catalpa bignonioides 'Aurea' for a dramatic gold-and-purple combination. See our what to expect from outdoor plants guide for season-by-season notes.

For a coppiced shrub habit, cut the previous year's growth back to a low framework in early spring just before the buds break. The flush of new growth produces the biggest, darkest leaves on regrowth. Equally at home in a large patio container.

Every Catalpa erubescens 'Purpurea' we send is a strong, well-rooted young specimen, hand-selected for a healthy crown and balanced shape, and packed with care to arrive in superb condition.

Live Arrival Guarantee

All plants are covered by our 7-day live arrival guarantee. We pack every order in protective, sustainable packaging designed to keep your plants safe in transit, and every plant is checked before it ships. On the rare occasion something is not right on arrival, we will make it good, provided the plant is still in its original nursery pot.

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What to Expect

Seasonal by nature: what to expect

  • Grown outdoors, the way nature intended. Weather-tested and hardened in real UK conditions, so they thrive in your garden. A few marks on the older leaves are normal, the sign of a tough, real plant rather than a flaw.
  • It follows the seasons. Depending on when you order, your plant may arrive cut back, dormant or leafless. That's healthy: dormancy is the ideal time to plant.
  • Posted, not posed. Big leafy plants like bananas and gingers may be trimmed or gently folded to travel safely. It does the plant no harm, and it powers away again in spring.

Not sure what to expect from yours? Dormant, cut-back or weather-marked plants are all perfectly healthy and normal. Read what to expect through the seasons

Delivery & returns

Order by 1pm Monday to Friday for same day dispatch. Every plant travels in protective, plant-safe packaging with tracked delivery.

Changed your mind? See our Return Policy.

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How to care for Purple Indian Bean Tree

Plant me in full sun and the coldest UK winters do not worry me.

In their words

What our customers say

Arrived just like the photos - maybe even fuller. Healthy, well-acclimated, and straight into my collection with no issues.

Emily P.

Flawless leaves, stunning variegation, and clearly cared for by experts. It’s already a talking point in my home office.

James R.

Hard to find rare plants that are pet-safe. Ours arrived in perfect condition and looks amazing without any worry.

Sophie L.
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About Purple Indian Bean Tree

Catalpa erubescens 'Purpurea' needs full sun or partial shade and moist but well-drained soil. It is very hardy, standing the coldest UK winters outdoors.

Good for

Architectural Exotic Borders Pots & Containers

Hardiness

TenderVery hardy

RHS H6 · Hardy Exotic · down to around −20°C

RHS H6, fully hardy.

Position

Full sunPartial shadeSouth-facingWest-facingEast-facingSheltered

full sun to partial shade; sheltered from strong winds that tear the large leaves.

Soil

ChalkClayLoamSandMoist but well-drainedAcid pHAlkaline pHNeutral pH

fertile, moist but well-drained; tolerant of most types including chalk and clay.

Watering

Water deeply through the first two summers to settle the roots in. Mulch each spring. Once established it is essentially self-sufficient. Coppice in early spring to keep it as a multi-stemmed dark-foliaged shrub with maximum leaf size. Read moreShow less

Water deeply through the first two summers to settle the roots in. Mulch each spring. Once established it is essentially self-sufficient. Coppice in early spring to keep it as a multi-stemmed dark-foliaged shrub with maximum leaf size.

Mature size

Height6-10 m
Spread5-8 m

Reaches full size in 20-50 years

Growth habit

Bushy

Flowering

Jul-Aug · White

Seasonal colour

Foliage

Deciduous

Pruning

Hard prune or pollard in late winter to keep it shrub-sized and force the deep-purple young foliage at head height. You lose the flowers in exchange.

Toxicity

Mildly toxic if eaten in quantity. Generally low risk.

Native range

Hybrid (C. bignonioides x C. ovata)

Family

Bignoniaceae

Also known as

Catalpa erubescens 'Purpurea'

Genus

Catalpa
Good to know

Frequently Asked Questions

How do you care for Catalpa 'Purpurea'?

Plant in fertile moist but well-drained soil in full sun to partial shade, sheltered from strong wind. Water through the first two summers and mulch each spring. For the darkest, biggest leaves, coppice in early spring just before bud break. See our Hardy Exotics seasonal guide.

How big does Catalpa 'Purpurea' get?

As a free-form tree expect around 6-10 metres tall and 5-8 metres wide over twenty to fifty years. Coppiced annually it stays at 2-3 metres as a striking dark-leaved multi-stemmed shrub. The coppicing approach is the way most UK gardeners grow it.

Will the purple foliage fade in summer?

The deepest dark purple-bronze colour holds on the freshly emerged spring leaves and through early summer. As the season warms the foliage ages to a rich bronze-green, which is still dark and striking. Coppicing each spring delivers a new flush of intensely dark leaves on the regrowth.

Will it flower?

Yes, on mature uncoppiced specimens. Upright panicles of white orchid-like flowers spotted with yellow and purple appear in July and August. Coppiced specimens rarely flower as the flowers form on older wood.

Is Catalpa 'Purpurea' fully hardy?

Yes. Rated RHS H6, fully hardy to around -20C. It thrives across the UK with a sheltered position to protect the large leaves from wind.

What pairs well?

Pair with golden grasses like Hakonechloa 'Aureola' for high contrast, or with Catalpa bignonioides 'Aurea' for a gold-and-purple combination. Brilliant alongside palms, tree ferns and hardy bamboos in an exotic mixed border.

Does my plant come with a pot?
Your plant will arrive in its nursery grow pot — the plastic pot it's been growing in. We don't include a decorative pot as standard, and there's a good reason for that: it means you get to choose one that fits your space and style, rather than being stuck with something that doesn't suit your home.

It also means you're not paying extra for a pot you might not want. The nursery pot is perfectly fine to keep your plant in for a while, just pop it inside a decorative cover pot or cache pot and you're good to go. When you're ready to repot (usually after a growing season or when roots start poking out the bottom), you can move it into something more permanent with fresh soil.

If you're not sure what size cover pot to go for, check the pot selector tool listed above, you'll want a decorative pot that's a centimetre or two wider than that to give it a comfortable fit.
How big will my plant be when it arrives?
Every plant on our site includes the pot size (e.g. 12cm) and, where possible, an approximate height. That's the most reliable way to set your expectations, photos can sometimes make a plant look larger or smaller than it really is.

If you're thinking "that sounds quite small for the price," here's something worth knowing: younger, smaller plants almost always adapt better to your home than larger ones. They adjust faster to your light and humidity, put out new growth more quickly, and tend to establish stronger root systems long-term. A plant that grows into your space will usually outperform one that was already big when it arrived.

That said, every plant is an individual. The one you receive may vary slightly in height, shape, or fullness compared to the photo, that's the nature of living things, not a quality issue. We select healthy, well-established specimens, and if you ever feel your plant doesn't match what you were expecting, just get in touch and we'll take a look.
What makes your plants different from the supermarket or garden centre?
There's a big difference between a plant that's been sitting under on a retail shelf and one that's been looked after and cared for by people who specialise in exactly this.

Our plants are grown in house or sourced from specialist nurseries, many of them varieties you simply won't find at your local garden centre or supermarket. Before anything leaves us, it's checked over by our horticultural team to make sure it's healthy, well-rooted, and ready to thrive in your home. We're not shifting volume off a pallet, we're choosing plants we'd want to keep ourselves.

When you buy from a supermarket, you get a plant and a generic care label. When you buy from us, you get the knowledge that comes with it, detailed care guidance, a team you can actually contact if something isn't going right, and the confidence that what's arriving has been looked after properly from the moment it was grown to the moment it reaches your door.

We're a specialist nursery first, not a retailer that happens to sell plants. That's the difference, and you'll see it the moment you open the box.
What should I do when my plant arrives?
First things first, unbox it as soon as you can. Plants don't love being in dark boxes any more than you would, and the sooner yours is out and breathing, the better.

Remove all the packaging carefully, give the soil a check with your finger, and water lightly if it feels dry. Then find it a spot with appropriate light, but avoid putting it straight into harsh direct sun or next to a radiator. Think of it like arriving somewhere new after a long journey: it needs a moment to adjust.

It's completely normal for your plant to look a little tired or droopy after transit. This is called transit stress, and most plants bounce back within a week or two. You might see a yellow leaf or some drooping, don't panic, and resist the urge to overwater or start repotting straight away.

Our advice for the first couple of weeks: leave it in its nursery pot, water it only when the top layer of soil feels dry, and let it acclimatise to your home's light, temperature, and humidity. Once it's settled in and showing signs of new growth, you can think about repotting or moving it to its permanent spot.

Every plant we sell comes with a care guide on the product page so you'll know exactly what it needs going forward. And if anything doesn't look right, get in touch with our team, we're always happy to help.
Will my plant survive being shipped?
Yes! and we go to serious lengths to make sure of it. Every plant is hand-packed by our team with protective wrapping and secure, custom-designed boxes to keep it stable and safe in transit. We've shipped hundreds of thousands of plants across the UK and our packaging methods have been refined over years to handle the bumps and jolts of delivery.

During colder months, we monitor weather forecasts and offer heat packs where needed to protect against frost. In extreme conditions, we may hold your order for a day or two rather than risk sending it out, we'd rather you wait an extra day than receive a stressed plant.

That said, plants are living things, and the occasional transit wobble can happen. If your plant arrives damaged or isn't in the condition you'd expect, just get in touch within 48 hours with a photo, and we'll make it right, whether that's a replacement or a full refund. No fuss.

The short version: we treat every box like it's going to someone who really cares about what's inside, because it is.
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Packaged with Care

Packaged with Care

Every order is hand-packed in eco-friendly, protective packaging - refined through thousands of deliveries to ensure your plant arrives healthy, hydrated, and looking its best.

Backed by our Live Arrival Guarantee.

Perfect for Gifting

Perfect for Gifting

From rare collector’s pieces to easy-care favourites, our plants arrive fully potted and ready to enjoy. Add a personalised note at checkout for a thoughtful finishing touch.

Delivered fresh, beautiful, and gift-ready.

Sustainability at Heart

Sustainability at Heart

All plants are ethically sourced from trusted growers, never wild-collected. Every order ships carbon-neutral in minimal-waste packaging.

Good for your home - and the planet.

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