la lana è biodegradabile?

Is wool biodegradable?

Does wool decompose in the soil?

Wool is one natural fiber resulting from sheep shearing. Sheep produce wool naturally and continuously, it is part of their nature. When Merino wool fabrics are disposed of, they naturally decompose in the soil, releasing useful nutrients. In contrast to synthetic fibres, which accumulate in landfills for a long time, contributing to global pollution.

Wool is biodegradable even in the marine environment, unlike microplastics coming from synthetic fabrics, harmful to marine and terrestrial ecosystems. 

Why is wool biodegradable?

Wool, like all natural fibres, is biodegradable, meaning it can be decomposed by living organisms such as fungi and bacteria. Additionally, wool is made up of keratin, a natural protein similar to that of human hair. When keratin is broken down by natural organisms, it has no negative impact on the environment.

How long does it take for wool to decompose?

Wool fabrics can decompose up to 95% after 15 weeks in the soil, releasing essential elements such as nitrogen and sulphur, beneficial for crops. However, some treatments that are done during the production of the fabric can affect biodegradability. For example, dyeing wool increases the resistance to decomposition slightly (8 weeks). On the contrary, the anti-shrinkage treatment speeds up the degradation process of the wool.

Wool decomposes rapidly in hot and humid conditions, favored by the action of fungi and bacteria. Introduced into the soil, wool becomes a slow-release fertilizer, providing nutrients for the growth of other organisms and contributing to a range of benefits, including increased water-holding capacity and reduced erosion.

lana come fertilizzante



Unlike synthetic fabrics, wool does not contribute to landfill saturation or microplastic pollution, as it decomposes naturally without accumulating in the environment. Studies from 2020 have shown that the polyamide resin used in the treatment of wool does not cause microplastic pollution.

inquinamento marino da microplastiche

Is wool eco-friendly and sustainable?

Wool is an ecological and sustainable choice since it is biodegradable, it releases nutrients into the soil and does not contribute to the release of microplastics into the environment.

For this reason Lanaioli has chosen to produce its garments only with natural fibers such as wool, cashmere, silk and cotton.