Nick Upton / Blue stonecrop (Sedum caeruleum) clump on limestone rock. Golgo Plateau, Gennargentu National Park, Baunei, Sardinia, Italy. May.

Nick Upton / White Stonecrop (Sedum album) clump flowering in a limestone rock crevice, near Sotres, Picos de Europa, Asturias, Spain, August.

Nick Upton / White Stonecrop (Sedum album) clump flowering in a limestone rock crevice, near Sotres, Picos de Europa, Asturias, Spain, August.

Guy Edwardes / Roseroot (Sedum rosea) Mangrt Pass, Julian Alps, Slovenia. June 2008

Nick Upton / Reflexed stonecrop (Sedum rupestre) flowering on a churchyard wall, Ysbyty Ystwyth, Ceredigon, Wales, UK, June.

Nick Upton / Reflexed stonecrop (Sedum rupestre) flowering on a churchyard wall, Ysbyty Ystwyth, Ceredigon, Wales, UK, June.

Nick Upton / Reflexed stonecrop (Sedum rupestre) flowering on a churchyard wall, Ysbyty Ystwyth, Ceredigon, Wales, UK, June.

Olga Kamenskaya / Roseroot stonecrop (Rhodiola rosea) flowers, Vaygach Island, Arctic, Russia, July

Ernie Janes / Ice plant (Sedum telephium) 'Purple Emperor' in flower in garden.

Dave Bevan / Common carder bumblebee (Bombus pascuorum) nectaring on a sedum flower, Carmarthenshire, Wales, UK, September.

Dave Bevan / Giant tachinid fly (Tachina grossa) nectaring on a sedum flower, Carmarthenshire, Wales, UK

Ernie Janes / Peacock butterflies (Inachis io) resting on Ice plant (Sedum spectabile) England, UK.