Nick Upton / Wallpepper (Sedum acre) clump flowering on a wall, Wiltshire, UK, June

Alex Hyde / English stonecrop (Sedum anglicum) amongst pebbles on the shoreline, Isle of Mull, Scotland, UK.

Roger Powell / English Stonecrop (Sedum acre) flowering on the wall of a ruined house, Great Blasket Island, Co.Kerry, Republic of Ireland, June

Roger Powell / Biting Stonecrop (Sedum acre) flowering on sheltered limestone pavement, The Burren, Co. Clare, Republic of Ireland, July

Nick Garbutt / English stonecrop (Sedum anglicum) growing on stones on shoreline of Loch Na Keal, Isle of Mull, Inner Hebrides, Scotland, UK, June

Guy Edwardes / Biting Stonecrop / Wallpepper (Sedum acre) flowering in pebbles, Vik i Myrdal, Southern Iceland, June

Paul Harcourt Davies / Biting stonecrop / Wallpepper (Sedum acre) (yellow) and Alpine Calamint (Acinos alpina) (purple) flowering on scree on Mt Terminillo, Apennines, Lazio, Italy

Robert Thompson / English stonecrop {Sedum anglicum}on mossy stone near water's edge, Brandon Mountain Tarn, Dingle, County Kerry, Republic of Ireland, July

Robert Thompson / English stonecrop {Sedum anglicum}on mossy stone near water's edge, Brandon Mountain Tarn, Dingle, County Kerry, Republic of Ireland, July

Ross Hoddinott / English stonecrop {Sedum anglicum} flowering amongst stone, North Cornwall, UK. June

Nick Garbutt / English Stonecrop (Sedum anglicum) growing in rock crevices on the shoreline. Coast of Isle of Mull, Scotland, UK.

Nick Garbutt / English Stonecrop (Sedum anglicum) growing in rock crevices on the shoreline. Coast of Isle of Mull, Scotland, UK.

Andy Sands / Biting Stonecrop / Wallpepper (Sedum Acre) Growing among sand dunes, Isle of Mull, Scotland, UK

Peter Lewis / Wallpepper / biting stonecrop (Sedum acre), Norway

Inaki Relanzon / English Stonecrop (Sedum anglicum) growing in a crack in a rock in the Spanish Pyrenees, Catalonia

Duncan Mcewan / English stonecrop {Sedum anglicum} flowering on old slate quarry, Scotland, UK

Jose B. Ruiz / Pale stonecrop {Sedum sediforme} Alicante, Spain

Philippe Clement / Wallpepper / Biting stonecrop in flower {Sedum acre} Spain

Philippe Clement / Wallpepper / Biting stonecrop in flower {Sedum acre}, Spain

Ross Hoddinott / English stonecrop (Sedum anglicum) Cornwall, UK

Philippe Clement / Wallpaper / Biting stonecrop leaves {Sedum acre} Belgium

Philippe Clement / Wallpaper / Biting stonecrop in flower {Sedum acre} Belgium

Tony Evans / Biting stonecrop / Wallpepper flowering {Sedum acre} UK

Jose B. Ruiz / Pale stonecrop in flower {Sedum sediforme} Alicante, Spain

Niall Benvie / English stonecrop {Sedum anglicum} St Ninian's Cave Bay Wigtown Scotland

Niall Benvie / English stonecrop (Sedum anglicum). Wigtown, Scotland, Europe

Paul Hobson / Wallpepper (Sedum acre) in flower. Derbyshire, England, UK, Europe