This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases, at no extra cost to you. See our Affiliate Disclosure.
Cotton and linen are two of the most popular natural fabrics in our wardrobes. Both come from plants, both feel great against the skin, and both are often sold as the “natural” alternative to polyester. But if you’re trying to shop more sustainably, which one is actually better for the planet?
The short answer is that linen usually comes out ahead, but cotton can be a good choice too if you buy the right kind. Here’s how they compare, and how to choose between them on a budget.
Where Do Cotton and Linen Come From?
Cotton comes from the fluffy fibres around the seeds of the cotton plant. It’s grown in warm climates around the world, with large producers including India, China, the USA and Brazil.
Linen is made from the stalks of the flax plant. Flax grows well in cooler, damper climates. According to the Alliance for European Flax-Linen and Hemp, around three-quarters of the world’s long flax fibre is grown in France, Belgium and the Netherlands.
Water Use
This is where the biggest difference lies.
Cotton is a thirsty crop. A widely quoted estimate is that it takes around 2,700 litres of water to produce the cotton for a single T-shirt. Much of the world’s cotton is grown in dry regions where it relies on irrigation, which can put pressure on local rivers and water supplies.
Flax is much less demanding. The European flax industry says that in Western Europe, flax is generally grown without irrigation and relies mostly on rainfall, with farmers only irrigating during serious dry spells.
Winner: linen.
Pesticides and Fertilisers
Conventional cotton farming has a reputation for heavy use of pesticides and fertilisers, which can harm soil, wildlife and farm workers.
Flax is a hardier plant that needs relatively few inputs. European producers also commit to growing flax without genetically modified varieties.
Winner: linen, although organic cotton narrows the gap considerably (more on that below).
Waste and Use of the Whole Plant
Almost nothing from the flax plant goes to waste. The fibres become fabric, the woody parts are used for things like animal bedding and building panels, and the seeds give us linseed oil.
Cotton by-products are used too (cottonseed oil, for example), but flax is often held up as one of the most efficient crops in fashion.
Durability
A sustainable fabric is one that lasts. Linen fibres are very strong, and well-made linen clothes and bedding can last for many years, often getting softer with every wash.
Cotton is durable too, but cheap cotton garments can thin, stretch or lose their shape quite quickly.
Winner: linen, as long as you look after it.
End of Life
Both linen and cotton are natural fibres, so in their pure form they can biodegrade. In practice, this depends on what’s been added. Synthetic dyes, chemical finishes and blends with polyester or elastane all make clothes much harder to break down or recycle.
Tip: choose 100% linen or 100% cotton where you can, ideally in undyed or naturally dyed shades.
Result: a draw.
Price and Comfort
This is where cotton fights back.
- Price: cotton is cheaper and much easier to find on the high street. Good linen usually costs more.
- Comfort: cotton is soft, stretchy in jersey knits, and easy to care for. Linen is cool and breathable, great for summer, but it creases easily.
- Versatility: cotton works for everything from T-shirts and jeans to underwear. Linen is best for shirts, trousers, dresses and bedding.
For many people on a budget, cotton will remain the everyday fabric, and that’s fine, as long as it’s the better kind.
What About Organic and Certified Cotton?
Not all cotton is equal. Organic cotton is grown without synthetic pesticides and fertilisers, and other certified programmes aim to reduce water and chemical use.
The good news is that this is growing. Textile Exchange’s 2026 Materials Market Report found that around 37% of the world’s cotton in 2025 came from certified or “preferred” programmes, up from 35% the year before. That still leaves most cotton grown conventionally, so it pays to check the label.
Look for labels such as:
- GOTS (Global Organic Textile Standard) for organic cotton, covering both farming and processing.
- Organic Content Standard (OCS), which verifies the organic content of a product.
- European Flax or Masters of Linen for linen grown and processed in Europe.
Quick Comparison
- Water use: linen uses far less
- Chemicals: linen needs fewer; organic cotton is a close second
- Durability: linen lasts longer
- Biodegradability: both are good when untreated
- Price: cotton is cheaper
- Everyday comfort: cotton is easier to live with
Where to Start
Ready to try one? A couple of good starting points:
- 100% linen duvet cover sets last for years and soften with every wash.
- Heavyweight organic cotton T-shirts are an affordable everyday option.
So, Which Should You Choose?
If you’re buying something you’ll wear for years, like a summer shirt, trousers or bedding, linen is the more sustainable choice and worth saving up for.
For everyday basics like T-shirts, leggings and underwear, organic or certified cotton is a practical, affordable option.
And whichever you pick, the most sustainable move is the same: buy fewer, better pieces, look after them, and consider second-hand first.
Do you prefer linen or cotton? Let me know in the comments below.