Hemp's Real Impact: The Numbers Behind Every RootSQuaRe Piece

RootSQuaRe doesn't use the word “sustainable” lightly. Before hemp became the fabric behind every Foundation and Ritual piece we make, we looked at what the material actually does — to water tables, to soil, to the air. Here are the numbers, as plainly as the research states them.

Water, By the Numbers

Textile fibres are thirsty by nature, but not equally. Comparative water-footprint studies put cotton at roughly 9,800–10,000 litres of water per kilogram of fibre, grown largely under irrigation. Hemp needs closer to 2,400–3,400 litres per kilogram — most of it rainfall, not irrigation. Depending on the study, that's a reduction of roughly 60 to 75 percent before a single thread is spun.

Carbon: Hemp Doesn't Just Avoid Emissions — It Absorbs Them

Most natural fibres are judged on how little carbon they emit. Hemp is unusual in that it actively draws CO2 out of the air while it grows. Estimates vary by region and growing method, but researchers place hemp's sequestration at roughly 8 to 15 tonnes of CO2 per hectare per growing cycle, with some trials reporting more. An established forest typically captures 2 to 6 tonnes of CO2 per hectare per year — meaning a single hemp field can match or outpace mature woodland on the same metric, years before trees would reach that rate.

Property	Hemp	Cotton
Water footprint	~2,400–3,400 L / kg fibre	~9,800–10,000 L / kg fibre
CO2 per hectare	~8–15 tonnes absorbed per cycle	No net sequestration; input-heavy
Pesticides	Little to none needed	Among the most pesticide-intensive crops
Soil impact	Restorative; used in crop rotation	Depleting without heavy management

Soil That Regenerates Instead of Depletes

Hemp's deep root system does more than anchor the plant — it breaks up compacted soil and draws up nutrients other crops can't reach, a process called phytoremediation. Farmers have used hemp for generations as a rotation crop precisely because it leaves a field healthier than it found it. Cotton, grown repeatedly on the same land, tends to do the opposite without heavy fertiliser input.

Why Small Batches Make the Impact Real

A low-impact material doesn't stay low-impact if it's overproduced. RootSQuaRe makes Foundation pieces to last, not to be replaced each season, and Ritual pieces strictly to order — nothing is produced speculatively, so nothing goes unsold or unworn. The material's numbers only hold up if the business built around it doesn't undo them with volume.

Frequently Asked Questions

Is hemp really carbon negative?

Growing hemp typically absorbs more CO2 than the plant releases during cultivation, which is why it's often described as carbon-negative or close to it. The exact balance shifts with farming method, transport and processing, so we treat it as a strong advantage rather than a fixed number.

Does using less water mean a lower-quality fabric?

No — hemp's lower water need comes from the plant's own drought tolerance, not from cutting corners in processing. Hemp fibre is naturally stronger than cotton and gets softer with every wash, independent of how much water it took to grow.

Why doesn't RootSQuaRe quote one single CO2 or water number?

Because the research doesn't agree on one. Figures shift with region, rainfall, and farming method. We'd rather give you the range reputable studies report than round it into a marketing claim.

How can I see this impact reflected in an actual piece?

Every Foundation and Ritual product page lists its exact material blend. Explore the Foundation essentials or the Ritual pieces to see which of our fabrics does the most for you.

Hemp was never a marketing choice for us — it's the only material that lines up with how we want to make clothing. Explore the Foundation essentials or the Ritual pieces, or check our FAQ for sizing and care details.