World Soil Day

World Soil Day (WSD) is held annually on 5 December as a means to focus attention on the importance of healthy soil and to advocate for the sustainable management of soil resources.

World Soil Day 2025
Healthy soils for healthy cities

The campaign website features hands-on activities for children, videos, events & more resources.

See the Muddy Faces Outdoor Hub for resources on The Importance of Soil.

#WorldSoilDay

Did you know?

• 95% of our food comes from soils.
• 33% of soils are degraded.
• It can take up to 1 000 years to produce just 2-3 cm of soil.
• Soils supply 15 of the 18 naturally occurring chemical elements essential to plants.
• There are more living organisms in a tablespoon of soil than people on Earth.
• Over the last 70 years, the level of vitamins and nutrients in food has drastically decreased.
• 2 billion people worldwide suffer from lack of micronutrients, known as hidden hunger.
• Agricultural production will have to increase by 60% to meet the global food demand in 2050.
• Up to 58% more food could be produced through sustainable soil management.
• Up to half of our household waste could be composted to nurture our soil.