Dianella revoluta 'Coolvista' Plants - Outdoor GROW TROPICALS
Blue Flax Lily

Dianella revoluta 'Coolvista'

£16.99
Protect from hard frostSun-lovingEvergreen
Pot size
17cm / 2L £16.99

FREE tracked delivery on orders over £60

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Description

Cool blue strappy foliage: Dianella 'Coolvista' is a compact flax lily grown for its dense clumps of narrow, stiff, blue-green leaves. It makes a tidy evergreen mound around 0.4 to 0.5 metres tall and wide, holding its cool colour all year. In early to mid summer it sends up loose sprays of small, star-shaped light blue flowers, sometimes followed by ornamental blue berries. It is a neat, architectural plant for the front of a border, a gravel scheme or a container.

Hardiness and seasons: This is a borderline plant in British gardens, rated H3 by the RHS. It stays evergreen and comes through winter outdoors in milder coastal and southern areas with good drainage. In colder or wetter gardens it is safer in a pot that can be moved to a sheltered, frost-free spot over winter, or given a dry mulch and a warm corner. Cold combined with winter wet is the main risk, so drainage matters as much as temperature.

How and where to grow: Give it full sun or partial shade on free-draining loam or sand with a neutral to acid pH. It is drought-tolerant once established and thrives in hot, dry spots where many plants sulk. It suits city gardens, coastal planting, gravel gardens and patio containers. Keep it out of cold, waterlogged ground, which it will not tolerate through a wet winter.

Getting it established and where it earns its keep: Water while the clump settles in through its first season, then it needs very little attention and is generally free of pests and diseases. Use it as evergreen structure in a mixed border, in gravel, or in pots on a sunny patio where its blue foliage carries the display all year. Our plants are grown outdoors and hardened off, ready for a sunny, well-drained spot.

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 Blue Flax Lily

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 Blue Flax Lily

Dianella revoluta 'Coolvista' needs full sun or partial shade and well-drained soil. It is half-hardy to around −5°C and needs protection from hard frost.

Good for

Architectural Coastal & Exposed Dry & Gravel Gardens Pots & Containers

Hardiness

TenderVery hardy

Semi-Hardy (H3): down to around −5°C. Half-hardy; reliable in mild or coastal gardens, protect in colder areas.

Borderline hardy (RHS H3). Evergreen and reliable outdoors in mild, well-drained gardens; protect from winter wet and hard frost in colder areas. Read moreShow less

Borderline hardy (RHS H3). Evergreen and reliable outdoors in mild, well-drained gardens; protect from winter wet and hard frost in colder areas.

Position

Full sunPartial shadeEast-facingSouth-facingWest-facingSheltered
Full sun or partial shade, facing east, south or west. Read moreShow less

Full sun or partial shade, facing east, south or west.

Soil

LoamSandWell-drainedAcid pHNeutral pH
Free-draining loam or sand, neutral to acid. Dislikes cold, waterlogged ground. Read moreShow less

Free-draining loam or sand, neutral to acid. Dislikes cold, waterlogged ground.

Watering

Water through the first season while it settles, then it is drought-tolerant and low-maintenance. Read moreShow less

Water through the first season while it settles, then it is drought-tolerant and low-maintenance.

Mature size

Height0.4 to 0.5m
Spread0.4 to 0.5m

Reaches full size in 2 to 5 years

Growth habit

Clump-forming

Flowering

Early to mid summer · Blue

Foliage

Evergreen

Pruning

No pruning required. Comb or trim out any tired or frost-marked leaves in spring to freshen the clump.

Toxicity

The ornamental berries are not edible. Wear gloves when handling and keep the fruit away from children and pets.

Native range

Australia (species); 'Coolvista' is a garden selection

Family

Asphodelaceae

Also known as

Dianella revoluta 'Coolvista'

Genus

Dianella
Good to know

Frequently Asked Questions

Is Dianella 'Coolvista' evergreen?

Yes. It holds its blue-green strappy foliage right through the year, so it gives structure to a border or container in every season.

Will it survive a UK winter outdoors?

In milder coastal and southern gardens with sharp drainage, usually yes. It is borderline hardy (H3), so in colder or wetter areas it is safer in a pot that can be moved somewhere sheltered and frost-free for winter.

Does it need much looking after?

Very little. Once established it is drought-tolerant, needs no pruning and is generally free of pests and diseases. The main thing to get right is good drainage.

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

Plants delivered the way they deserve

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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Dianella revoluta 'Coolvista'
£16.99