Sorbaria sorbifolia 'Sem' Plants - Outdoor GROW TROPICALS
Sorbaria sorbifolia 'Sem' — 19cm / 3L19cm / 3L
Sorbaria sorbifolia 'Sem' Plants - Outdoor GROW TROPICALS
False Spiraea

Sorbaria sorbifolia 'Sem'

£15.99 £18.99 SAVE 15%
Hardy in the UKLoved by pollinators
Pot size
19cm / 3L £15.99

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Description

Meet the plant: Sorbaria sorbifolia, the false spiraea, is a deciduous shrub valued for two things, its ferny foliage and its big summer plumes. The leaves are pinnate and look a lot like a rowan, opening with a bronzed flush before turning fresh green. In summer it throws up large, frothy panicles of creamy-white flowers that bees work over happily.

Hardiness and seasons: It is thoroughly hardy, rated H5, and comes through severe winters without fuss. Being deciduous, it drops its leaves in autumn and reappears each spring, often with that attractive coppery new growth. Flowering runs through the summer months.

How and where to grow: This is an easy, adaptable shrub that takes full sun or partial shade and almost any soil that stays reasonably moist, from clay to chalk. The one thing worth knowing up front is that it spreads by suckers and can form a wide thicket in time, reaching 2.5 to 4m each way if left to its own devices. That habit is a gift for filling a difficult bank or screening a corner, and a nuisance in a tight border, so choose the spot with that in mind.

Getting it established and keeping it in check: Water through the first year while it roots in. After that, the main job is control. Cut it hard in late winter to keep it compact and to encourage the best foliage, and simply dig out unwanted suckers as they appear. It regrows strongly, so you can hardly prune it wrong.

What you receive: Supplied in a 19cm pot, ready for the open garden.

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 False Spiraea

Plant me in full sun and I will stand a UK winter outdoors.

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 False Spiraea

Sorbaria sorbifolia 'Sem' needs full sun or partial shade and moist but well-drained soil. It is hardy to around −15°C and stands a UK winter outdoors.

Good for

Coastal & Exposed Exotic Borders Screening & Privacy Wildlife & Pollinators

Hardiness

TenderVery hardy

Hardy Exotic (H5): down to around −15°C. Hardy through a cold UK winter.

Fully hardy across the UK, rated H5, and unfazed by severe winters. Read moreShow less

Fully hardy across the UK, rated H5, and unfazed by severe winters.

Position

Full sunPartial shadeNorth-facingEast-facingSouth-facingWest-facingExposedSheltered
Full sun or partial shade. Any aspect, including exposed sites. Read moreShow less

Full sun or partial shade. Any aspect, including exposed sites.

Soil

ChalkClayLoamSandMoist but well-drainedNeutral pHAlkaline pH
Almost any soil that stays reasonably moist, from clay to chalk, neutral to alkaline. Read moreShow less

Almost any soil that stays reasonably moist, from clay to chalk, neutral to alkaline.

Watering

Water through the first year while it roots in. After that it is tough and needs little watering. Read moreShow less

Water through the first year while it roots in. After that it is tough and needs little watering.

Mature size

Height2.5-4m
Spread2.5-4m

Reaches full size in 5-10 years

Growth habit

Suckering

Flowering

Summer (June to August) · White, Cream

Foliage

Deciduous

Pruning

Cut hard in late winter to keep it compact and to bring on the best foliage. Dig out unwanted suckers as they appear to control its spread. It regrows strongly.

Toxicity

No significant toxicity reported.

Native range

Northern Asia (Siberia, N China, Korea, Japan)

Family

Rosaceae

Also known as

Sorbaria sorbifolia 'Sem'

Genus

Sorbaria
Good to know

Frequently Asked Questions

Does it really spread that much?

It can. Sorbaria sorbifolia spreads by underground suckers and will form a wide thicket in time. That is brilliant for covering a bank or screening a corner, but worth planning for in a small or tightly planted border.

How do I keep it under control?

Dig out unwanted suckers whenever they appear, and cut the whole shrub back hard in late winter. It responds well to firm handling and comes back strongly, so you can be bold.

What does it look like through the year?

New growth opens with a coppery, bronzed flush in spring, matures to fresh green ferny foliage, then carries large creamy-white plumes in summer. It is deciduous, so it drops its leaves for winter.

Is it good for wildlife?

Yes. The frothy summer flowerheads are rich in nectar and pollen and are popular with bees and other beneficial insects.

Will it cope with a difficult, exposed site?

It is one of the easier shrubs for tough spots. It handles exposure, most soils and partial shade, which is exactly why it is so useful for banks and awkward corners.

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.
Why Grow Tropicals

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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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Sorbaria sorbifolia 'Sem'
£15.99 £18.99