September is Organic Month, and this year the Organic Trade Association is running a campaign with a good, plain theme: Seal Makes It Simple. Look for the seal. Trust what it stands for. Get on with your life. The campaign launched in September 2025 for the association's 40th anniversary and runs through the end of 2026, and it explicitly asks shoppers to look for the USDA Organic seal on textiles as well as food.

We agree. In food.

Here is the sentence that complicates it: you can buy a certified organic bed sheet that was coloured with a synthetic dye. You can buy a jumper sold as organic wool that has been chlorine-treated and coated with a synthetic resin. Neither of those is a loophole, an oversight, or a scandal. It is simply how the labels are written.

And once you know it, the word "organic" on a textile starts to look less like an answer and more like the beginning of a question.

The word does a smaller job than you think

The seal really does make it simple in food, and that is not a small achievement. It is a federally regulated standard, backed by certification and inspection.

In textiles, the product is not the fibre. It is the fibre plus everything done to it: scouring, bleaching, dyeing, softening, finishing, sometimes a dozen wet-processing steps between the field and your body. Organic certification of the fibre covers the first part of that sentence. The rest is governed separately, or not at all.

The USDA is explicit about this. Under its organic textile policy, a manufacturer can state that specific fibres in a product are certified organic and give the percentage, but that does not make the finished product USDA organic. Only a finished product certified in full compliance with the USDA organic regulations can carry the USDA seal. The agency's own policy memo notes that its organic regulations contain no specific processing or manufacturing standards for textile products at all. Fibre claims and finished-product claims are two different things.

Every fibre has an afterward

This is not a cotton problem. Each fibre has its own set of things that happen after the harvest, and each one sits outside the farming claim.

• Cotton is often bleached. The brilliant white that reads as clean is a chemical outcome, not a natural one, and organic farming has nothing to say about it.
• Wool has superwash. A peer-reviewed review of shrink-resist methods estimates that roughly 70% of all wool labelled fully machine-washable is treated by the chlorine-Hercosett process, which combines chlorination of the fibre surface with a coating of polyamide-epichlorohydrin resin to prevent felting. The same review notes the process discharges adsorbable organohalogens, or AOX, into the effluent. GOTS prohibits chlorination of wool.
• Linen and hemp are often sold on the strength of the plant's reputation: low input, fast growing, hardy. But natural is not organic, and organic is not the same as unprocessed. What happens during retting, bleaching, softening and finishing matters too.
• Silk is degummed before it can be dyed, and what it is degummed and finished with is a processing question, not a farming one.

Five fibres, one pattern.

The certificate describes the field. Your skin meets the finish.

The decoder

Read the left column and the certifications look strong, because they are.

GOTS 7.0, the version currently in force, prohibits inputs that release arylamines with carcinogenic properties, dyes and pigments containing heavy metals, disperse dyes classified as sensitising, and colourants classified or suspected as carcinogenic. It permits only oxygen-based bleaching, prohibits chlorination of wool, and requires functional wastewater treatment at every wet-processing facility. It also requires certified entities to calculate the gap between what they pay and a living wage, and to develop a plan to close it. Version 8.0 was released in March 2026 and becomes mandatory for all audits from 1 March 2027.

This is serious work, seriously enforced.

Read the right column and you find the same gap in every row.

Nobody is asking what the colour is made of

Not "is this dye on the banned list?" Every credible standard asks that.

The prior question is: what is this colour, actually, and where did it come from?

A synthetic dye can meet the relevant hazard requirements of GOTS and still be a petrochemical product, applied with auxiliaries, fixed with more chemistry, and rinsed into wastewater that then needs treating.

Nothing about that is necessarily illegal or hidden. It is simply not what most people picture when they read the word organic on a textile.

We have said before that organic describes how cotton is grown, not what happens afterward. Colour is the part of "afterward" that is often treated as decoration rather than as an ingredient.

But colour is an ingredient. It applies to a linen shirt exactly as it applies to a cotton sheet.

What the word should mean

Organic Month is worth having precisely because the word carries weight. In the UK, a separate campaign runs through September: Organic September, from the Soil Association, whose certification arm certifies textiles as well as food and beauty. The invitation is real. The standards behind it are real.

But if organic in textiles is going to carry the weight shoppers already give it, it needs to answer three questions instead of one.

So this Organic Month, ask the second question.

What is the colour made of?