Gary K. Smith / Rows of Lettuce (Lactuca sativa) and salad vegetables, Eden Project, Cornwall, England, UK, May

Konrad Wothe / Assorted vegetables, Germany

MYN / Dirk Funhoff / Perennial lettuce (Lactuca perennis), Theisbergstegen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Perennial lettuce (Lactuca perennis) flower, Pfalz, Theisbergstegen, Pfalz, Germany. July. Meetyourneighbours.net project

Konrad Wothe / Edible Snail (Helix pomatia) feeding on lettuce, Bavaria, Germany

Philippe Clement / Wild lettuce (Lactuca virosa), Belgium, April.

Ernie Janes / Sempervivum plants for sale at garden centre, England, UK, June.

MYN / Carsten Krieger / Sea Lettuce (Ulva lactuca) on Common Limpet (Patella vulgata) from tide pool, County Clare, Republic of Ireland, December. Meetyourneighbours.net project

MYN / Carsten Krieger / Sea Lettuce (Ulva lactuca) on Common Limpet (Patella vulgata) from tide pool, County Clare, Republic of Ireland, December. Meetyourneighbours.net project

MYN / Carsten Krieger / Sea Lettuce (Ulva lactuca) from tide pool, Carageen, County Clare, Republic of Ireland, December. Meetyourneighbours.net project

MYN / Carsten Krieger / Sea Lettuce (Ulva lactuca) from tide pool, County Clare, Republic of Ireland, December. Meetyourneighbours.net project

Nick Upton / Sea lettuce / Green laver (Ulva lactuca) growing in a rockpool alongside Coralweed (Corallina officinalis). Rhossili, The Gower Peninsula, UK, July.