Gymnocalycium mihanovichii 'Japan' Plants GrowTropicals
Chin Cactus

Gymnocalycium mihanovichii 'Japan'

£7.99
Hard to kill
Pot size
7.5cm £7.99

FREE tracked delivery on orders over £60

Complete the set up
Desert Mix | Premium Cacti & Succulent Potting Mix
The perfect soil Desert Mix | Premium Cacti & Succulent Potting Mix · 2.5L · £4.99
Description

Gymnocalycium mihanovichii 'Japan' is a neat, ribbed globe of a cactus with a very dark pattern. Each rib carries small, tidy clusters of spines, and it flowers readily, even as a young plant, with pale pink to greenish-white flowers opening from the crown in summer. If you are after colour, our variegated Gymnocalycium is the bright alternative, and both sit well among our cacti and succulents.

Origins

The species is a small cactus from the dry Chaco scrub of Paraguay and northern Argentina. 'Japan' is the trade name this form is sold under rather than a registered cultivar.

Care

Give it plenty of light, such as a bright windowsill, with some shade from the strongest midday summer sun. Water in spring and summer only once the compost has dried out completely, then keep it almost dry through winter. Normal room humidity is fine. Keep it above 10C and away from cold glass in winter. A gritty, free-draining cactus compost such as our Desert Mix keeps the roots healthy, and its size makes it an easy fit among our small plants.

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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Delivery & returns

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

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How to care for Chin Cactus

Set me near a bright window, out of direct sun and hold the water until my soil is properly dry.

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 Chin Cactus

Gymnocalycium mihanovichii 'Japan' is an easy-care houseplant. It needs bright indirect light, watering only once the compost has dried right through, average household humidity and a minimum temperature of 10°C.

Good for

Living Room Bedroom Office

Care level

EasyChallenge

Easy care

Light

ShadeFull sun

Bright, indirect light

Bright light, such as a sunny or bright windowsill. Shade it from the strongest midday sun in summer, which can scorch the body. Too little light makes it stretch and lose its neat shape. Read moreShow less

Bright light, such as a sunny or bright windowsill. Shade it from the strongest midday sun in summer, which can scorch the body. Too little light makes it stretch and lose its neat shape.

Watering

Evenly moistDries out fully

Let it dry out fully between waterings

In spring and summer, water thoroughly once the compost has dried out completely, then let the excess drain away. In winter keep it almost dry. Never leave the pot standing in water, as wet roots rot quickly. Read moreShow less

In spring and summer, water thoroughly once the compost has dried out completely, then let the excess drain away. In winter keep it almost dry. Never leave the pot standing in water, as wet roots rot quickly.

Humidity

Average homeHigh humidity

Happy at normal household humidity

Average room humidity is ideal. It needs no misting. Read moreShow less

Average room humidity is ideal. It needs no misting.

Temperature

Keep above 10°C · Happy at normal room temperature

Keep it above 10C all year, ideally 18 to 30C in the growing season, away from cold glass and winter draughts. A cooler, drier rest in winter (10 to 15C) helps it flower. Read moreShow less

Keep it above 10C all year, ideally 18 to 30C in the growing season, away from cold glass and winter draughts. A cooler, drier rest in winter (10 to 15C) helps it flower.

Feeding

Feed monthly with a balanced fertiliser from spring to autumn, and let it rest over winter.

Growth habit

Upright →

Plant type

Cactus →

Family

Cactaceae

Also known as

Gymnocalycium mihanovichii 'Japan'

Genus

Gymnocalycium
Good to know

Frequently Asked Questions

What is Gymnocalycium mihanovichii 'Japan'?

A compact, plain green form of the chin cactus, sold under the trade name 'Japan' rather than as a registered cultivar. It is not variegated and not grafted, so it grows on its own roots and makes its own food.

Why is it called a chin cactus?

Gymnocalycium are known as chin cacti because of the small bump, like a chin, that sits below each cluster of spines along the ribs.

How often should I water it?

Water in spring and summer only when the compost has dried out completely, usually every two to three weeks depending on warmth and light. In winter keep it almost dry. Overwatering is the most common way to lose one.

Does it flower?

Yes. Gymnocalycium are among the easiest cacti to bring into flower, often from a young age. Pale pink to greenish-white flowers open from the top of the plant in late spring and summer, especially after a cool, dry winter rest in good light.

How big does it grow?

It stays small and grows slowly, usually reaching no more than 5 to 6cm across, so it will live happily on a windowsill for years.

Are your plants treated with pesticides?
We aim to avoid using pesticides where possible, but we can't control the whole supply chain.

If the plant is going into a vivarium, terrarium or aquarium with live animals, rinse the leaves and roots well, remove any soil and let the plant dry out before adding it. We'd also suggest keeping it away from animals for a month first.
Can I see a photo of the exact plant I'll receive?
We're not able to send photos of individual plants or let you choose a specific one, as plants are selected by our team when your order is packed. Our photos show the variety and the kind of plant you can expect, and yours may vary a little in height, shape or fullness.

If a size has a code next to it, such as 9cm / B2, you're buying the exact plant pictured.
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 7 days 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.
Meet the family

Everything about Gymnocalycium

Gymnocalycium, commonly known as Chin Cactus, is a fascinating genus of small, globular cacti native to South America. More specifically, they are primarily found in Argentina, Paraguay, Uruguay, Bolivia, and Brazil. They thrive in semi-arid regions where t...

More about Gymnocalycium care
Gymnocalycium Care Guide
Why Grow Tropicals

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Packaged with Care

Packaged with Care

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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.

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

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Gymnocalycium mihanovichii 'Japan'
£7.99