Discover what lies beneath your lawn

It is one of the world’s most precious natural resources and is vital for growing the food that we depend on for survival.

But how much do you know about the soils beneath your feet and the creatures that make their home there?

As milder temperatures begin to arrive, it’s the perfect time to discover the world beneath your lawn by taking part in the OPAL soil and earthworm survey.


How do your earthworm results compare?

A new feature on our website will show you how your soil and earthworm survey results compare to other sites across the country.

Our live results map now tallies up the number of earthworms you’ve counted and plots them against surveys submitted by other people.


OPAL releases new earthworm key

Help our scientists by identifying the earthworms in your garden or school playing field with our new, simple guide.

The free guide covers the seven most common species of earthworms in British lawns and recreation fields, helping you put names to the species you might find in your own back garden.


Proposing a methodology for a soil typology classification using simple indicators and data collected by the public


By Victoria Butler: September 2009

Supervisors: Dr Nick Voulvoulis & Dr Martin Head


This project aims to classify soil types by the parameters set in the OPAL Soil and Earthworm guide, and assess the guide's suitability.


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