Firefern 'Nordlys' (Molten Lava Sorrel)
Oxalis spiralis vulcanicola 'Nordlys'
Firefern 'Nordlys' (Molten Lava Sorrel)
Oxalis spiralis vulcanicola 'Nordlys'
£7.99
£7.99
£10.99
New to this plant? See how to care for it
Oxalis spiralis vulcanicola 'Nordlys'
10cm / 0.5L
£8.99
Ordering in autumn or winter? Many hardy exotics arrive dormant or cut back right now. This is normal, and the best time to plant.
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
The Oxalis spiralis vulcanicola 'Nordlys' is the original firefern or molten-lava sorrel, the classic 'Molten Lava' selection grown for glowing bronze-red, clover-shaped leaves and cheerful yellow flowers together. Warm coppery foliage and sunny blooms play off one another all summer, mounding into a low, bushy cushion that lights up a patio pot or basket. This is the definitive firefern for colour and flower in one plant.
A frost-tender firefern (around RHS H1c to H2), it earns its keep outdoors through the warmer months and comes inside for winter, so its fiery colour and flowers return summer after summer.
That tenderness is really versatility: 'Nordlys' is equally at home as a bright houseplant or a summer garden centrepiece. It loves bright light, so give it the high light of a conservatory, greenhouse or sunny windowsill indoors, or a bright, sheltered spot outdoors once nights stay reliably above about 10C.
How and where to grow
- Position: full sun for the richest bronze-red colour and best flowering, and it tolerates a little light shade.
- Soil: any fertile, moist but well-drained compost; brilliant in pots and containers and hanging baskets.
- Size: a neat, mounding habit to roughly 15-25 cm high and wide.
- Hardiness: tender (around RHS H1c to H2); overwinter frost-free at a minimum of around 10C, or take easy cuttings to carry it over.
Care is simple and rewarding: keep the compost evenly moist and feed every couple of weeks through summer for the strongest colour and flowering, trimming lightly now and then to keep the mound full and bushy. It looks superb at the front of exotic borders, tumbling from baskets, and even in coastal and exposed gardens given shelter from frost. Pair it with the deep Oxalis Vulcan Red or the rosy Oxalis Vulcan Pink, explore more of our hardy exotics, and see what to expect.
Every plant is nursery-grown and hand-selected for strong colour and healthy roots, then packed with care to arrive in top condition.
Hardiness & Frost
Tender (RHS H1c-H2). This is a frost-sensitive foliage perennial, not a hardy plant. Stand it outside for the warmer months once nights stay reliably above about 10C, then bring it under cover before the first frosts. Overwinter it frost-free on a bright windowsill or in a heated greenhouse at a minimum of around 10C, or take cuttings in late summer as insurance.
Sun & Aspect
Full sun gives the richest bronze-red colour and sets off the yellow flowers best, though it copes with a little light shade. A warm, sheltered patio or a bright, sunny windowsill under glass suits it perfectly.
Soil
Any fertile, moist but well-drained compost. It is superb in pots, containers and hanging baskets, where its low, mounding habit spills gently over the edge. Sharp drainage matters most, as cold wet compost in winter is the main risk.
Watering & Establishment
Keep the compost evenly moist through the growing season and feed every couple of weeks with a balanced liquid feed for the best colour. Ease off watering in winter while growth slows. Trim lightly through summer to keep the mound bushy and full.
Oxalis Care Guide
Read the full care guide →-
No. This molten-lava firefern is a tender foliage perennial (around RHS H1c to H2) grown for its bronze-red leaves, not a hardy plant. Treat it as a summer patio plant: stand it outside once nights stay above about 10C and bring it under cover before the first frosts. See our note on what to expect.
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Yes, through the warmer months. It is a classic summer bedding, container and hanging-basket foliage plant. Grow it in pots and containers on a sunny patio, then overwinter it frost-free.
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Full sun brings out the richest bronze-red tones and sets off the yellow flowers, though it tolerates a little light shade. A warm, sheltered spot suits it well, including coastal and exposed gardens once the frosts have passed.
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Bring it indoors before the frosts and keep it frost-free at a minimum of around 10C on a bright windowsill or in a heated greenhouse. Water sparingly over winter. Taking a few cuttings in late summer is a good insurance policy.
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Ideally so. Its low, mounding and gently trailing habit spills over the edge of a container, making it excellent in pots and baskets and at the front of exotic borders.
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Yes. 'Nordlys' is the classic firefern for flower and leaf together, carrying cheerful yellow blooms through summer that contrast beautifully against the bronze-red foliage.
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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. -
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. -
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. -
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. -
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.
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. Whether grown in our own nursery or sourced from trusted partner growers, every plant is checked before it ships. On the rare occasion something isn't right on arrival, we'll make it good, provided the plant is still in its original nursery pot.
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