Callistemon rigidus Plants - Outdoor GROW TROPICALS
Stiff Bottlebrush

Callistemon rigidus

£8.99
Protect from hard frostSun-lovingEvergreenLoved by pollinators
Pot size
9cm / 0.5L £8.99

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Description

Callistemon rigidus, the stiff bottlebrush, is regarded as one of the toughest of all the bottlebrushes and a brilliant way to bring a burst of Australian colour to an exotic planting scheme. Through summer the branch tips carry dense spikes of deep red, brush-shaped flowers packed with nectar, held against narrow, rigid, dark green leaves that stay on the plant all year.

Like the rest of the genus it still needs a little thought: RHS rated H3, it is happiest in milder and coastal gardens, and appreciates a warm, sheltered spot with its back to a sunny wall in colder areas. Some UK nurseries report established plants in dry, sheltered positions shrugging off frosts approaching -10C, but young plants should always be fleeced in a hard freeze.

Water well through the first couple of summers, after which it is impressively drought tolerant and a natural fit for coastal and exposed gardens. It also makes an excellent shrub for a hot patio; browse our plants for pots for companions. The nectar-rich brushes are magnets for bees and other pollinators, and the deep red spikes pair beautifully with the creamy brushes of its cousin Callistemon salignus in an exotic border.

Explore the rest of our hardy exotics and read what to expect from our outdoor plants before ordering.

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 Stiff Bottlebrush

Plant me in full sun and protect me when hard frost threatens.

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 Stiff Bottlebrush

Callistemon rigidus needs full sun and moist but well-drained soil. It is half-hardy to around −5°C and needs protection from hard frost.

Good for

Coastal & Exposed Exotic Borders Pots & Containers Wildlife & Pollinators

Hardiness

TenderVery hardy

RHS H3 · Semi-hardy · down to around −5°C

H3; protect from hard frost and avoid winter wet.

Position

Full sunSouth-facingWest-facingSheltered

full sun, sheltered; south or west facing.

Soil

ClayLoamSandMoist but well-drainedWell-drainedAcid pHNeutral pH

well-drained clay, loam or sand; acid to neutral.

Watering

Water regularly through the first two summers, then only in long dry spells. Impressively drought tolerant once established. Read moreShow less

Water regularly through the first two summers, then only in long dry spells. Impressively drought tolerant once established.

Mature size

Height1.5 to 2.5m
Spread1.5 to 2.5m

Reaches full size in 10-20 years

Growth habit

Bushy

Flowering

Jun-Aug · Red

Seasonal colour

Foliage

Evergreen

Pruning

Tip-prune young plants to encourage bushiness. Trim spent brushes back just behind the flowered spike after flowering; avoid cutting into old bare wood, which reshoots poorly.

Toxicity

Not known to be toxic to people or pets.

Native range

E. Australia

Family

Myrtaceae

Also known as

Callistemon rigidus

Genus

Callistemon
Good to know

Frequently Asked Questions

Is Callistemon rigidus hardy in the UK?

Callistemon rigidus is rated H3 by the RHS, so it is reliable in mild and coastal gardens and needs a warm, sheltered spot elsewhere. It is often described as one of the hardiest bottlebrushes, and established plants in dry, free-draining positions have come through frosts approaching -10C, but young plants should be fleeced whenever a hard freeze is forecast. Read what to expect from our outdoor plants for how we recommend seeing exotics through winter.

Where is the best place to plant a bottlebrush?

Give it the sunniest, most sheltered spot you have: south or west facing, ideally with a warm wall behind it, in any well-drained soil from sand to improved clay. Plenty of sun ripens the wood, which is what drives a heavy flush of red brushes. It sits naturally among other exotic border plants and copes well in coastal gardens.

Can you grow Callistemon rigidus in a pot?

Yes, and in colder gardens a pot is the smart way to grow it. Use a free-draining, loam-based compost with added grit, water freely in summer and sparingly in winter, and move the container against the house or into a cold greenhouse for the worst weather. Slightly restricted roots often flower better. Browse our plants for pots for good companions.

Should a bottlebrush be cut back after flowering?

Only lightly. Trim each spent brush back to just behind the flowered spike once the display fades, which keeps the plant dense and stops seed capsules building up. Tip-prune young plants to encourage branching, and avoid cutting into old, bare wood as it reshoots poorly.

How tall does Callistemon rigidus grow?

Expect around 1.5 to 2.5m tall and wide after 10 to 20 years in the UK. It is not a fast plant, so it stays in proportion in a border for many seasons and is easily kept smaller in a container or with a light annual trim after flowering.

Why is my bottlebrush not flowering?

The usual culprits are too little sun, over-generous feeding, or pruning at the wrong time. Bottlebrushes flower on wood ripened in full sun, so a shaded plant produces leaves instead of brushes; rich feeding has the same effect. Prune only lightly and straight after flowering so you are not removing next year's flowering wood, and be patient with young plants, which often take a season or two to settle in. The brushes are worth the wait for bees and other pollinator-friendly planting.

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

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.

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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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Callistemon rigidus
£8.99