Soil and earthworm survey - join in now

The best time to do this survey is from March to September.

Discover more about the world of earthworms and help scientists with valuable research

Earthworms are extremely important and play a vital role in recycling plant nutrients and aerating the soil. By taking part in this survey, you'll help improve our knowledge of earthworms and the soils they live in – something we know surprisingly little about.

Get involved

The survey will help us learn more about earthworms

Taking part is simple and fun. To get started, download our easy-to-follow instructions and earthworm identification key.


Enter your results online

Once you've completed the survey, simply submit your results using the online form. You'll be able to see your contribution instantly on our interactive maps.

Problems entering your survey results online?

Send your completed workbook and detailed information on your site location to:


Please show care and respect to our environment.

The soil is home to many important creatures.

FREEPOST RSCH-CHYJ-HYYC, OPAL, Centre for Environmental Policy, Imperial College, South Kensington, London SW7 2AZ.

Need more pH strips?
Email your address and the number you require to


See the results so far

View and analyse all the results so far with interactive maps and graphs. Which earthworm species are the most common and which soils have they been found in? How do your results compare?




See your earthworm pictures

See all the earthworm pictures you've submitted to us so far. Get snapping and add your photos to the gallery.


Play earthworm frenzy

Earthworm frenzyTest your reaction speeds and try to catch as many worms as you can in the time limit.


Soil and earthworm activity sheets

Make your own wormery with the soil and earthworm activity sheets available in our Kids Zone.


Tree health survey

Tree health surveyLearn more about the trees around you and provide scientists with vital information about their health.



The soil and earthworm survey is being led by the OPAL Soil Centre at Imperial College, London.