Rolf Nussbaumer / Alpine squill lily {Scilla bifolia} Switzerland.

Rolf Nussbaumer / Alpine squill lily {Scilla bifolia} Switzerland.

Nigel Cattlin / Sea squill (Drimia maritima) flower spike, close up. Isola Rossa, Sardinia, September.

Nigel Cattlin / Sea squill (Drimia maritima) flower spike near coast. Isola Rossa, Sardinia, September 2016.

Juan Carlos Munoz / Pyrenean squill (Scilla lilio-hyacinthus), Ibarra, Orozko, Biscay, Basque Country, Spain. March.

Nick Upton / Spring squill (Scilla verna) flowering on coastal grassland, Trevose Head, Cornwall, UK, May.

Nick Upton / Spring squill (Scilla verna) flowering on coastal grassland, Trevose Head, Cornwall, UK, May.

Nick Upton / Spring squill (Scilla verna) flowering on coastal grassland, Trevose Head, Cornwall, UK, May.

Nick Upton / Spring squill (Scilla verna) flowering on coastal grassland, Trevose Head, Cornwall, UK, May.

Sue Daly / Autumn squill (Scilla autumnalis) Sark, British Channel Islands, August.

Paul Harcourt Davies / Sea squill (Drimia maritima) flowers in late summer, showing stamens, and ovules, Lazio coast. Italy. September.

Paul Harcourt Davies / Sea squill (Drimia maritima) flowers in late summer Lazio coast. Italy, September.

Paul Harcourt Davies / Sea squill (Drimia maritima) flowers in late summer, Lazio coast. Italy. September.

Paul Harcourt Davies / Alpine squill (Scilla bifolia) Gran sasso, Abruzzo, Italy. April.

Paul Harcourt Davies / Alpine squill (Scilla bifolia) Gran sasso, Abruzzo, Italy. April.

Paul Harcourt Davies / Two-leaved scilla (Scilla bifolia) near Orvieto, Italy. March.

Paul Harcourt Davies / Two-leaved scilla (Scilla bifolia) near Orvieto, Italy. March.

MYN / Dirk Funhoff / Alpine squill (Scilla bifolia), Gau-Algesheimer Kopf Nature Reserve, Ingelheim, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Alpine squill (Scilla bifolia) growing through dry leaf, Gau-Algesheimer Kopf Nature Reserve, Ingelheim, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Alpine squill (Scilla bifolia), Gau-Algesheimer Kopf Nature Reserve, Ingelheim, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Alpine squill (Scilla bifolia) flower, Ingelheim, Pfalz, Germany. March. Meetyourneighbours.net project

MYN / Dirk Funhoff / Alpine squill (Scilla bifolia) flowers, Ingelheim, Pfalz, Germany. March. Meetyourneighbours.net project

MYN / Dirk Funhoff / Alpine squill (Scilla bifolia), Ingelheim, Pfalz, Germany. March. Meetyourneighbours.net project

Constantinos Petrinos / Alpine squill (Scilla bifolia) flower, Mount Parnitha, Attica, Greece, March.

Chris Mattison / Spring squill (Scilla verna) growing in serpentine rubble, Keen of Hamar, Unst, Shetlands, Scotland, UK, June.

Fabrice Cahez / Alpine squill (Scilla bifolia) flowers, Vosges, France, March.

Nick Upton / Turkish Squill (Scilla bithynica) an invasive species from eastern Europe and Turkey naturalised in the UK, Bath, Bath and northeast Somerset, April.

Nick Upton / Carpet of Turkish Squill (Scilla bithynica) an invasive species from eastern Europe and Turkey naturalised in the UK, Bath, Bath and northeast Somerset, UK, April.

Alex Hyde / Spring Squill (Scilla verna) in flower on cliff top. Iona, Isle of Mull, Scotland, UK. June.

Alex Hyde / Spring Squill (Scilla verna) in flower on cliff top. Iona, Isle of Mull, Scotland, UK. June.

MYN / Paul Harcourt Davies / Two-leaved Scilla (Scilla bifolia) in flower near Orvieto, Italy, March. Meetyourneighbours.net project

Paul Harcourt Davies / Alpine Squill (Scilla bifolia) in flower, near Torralfina, Lazio, Italy, March

Paul Harcourt Davies / Alpine Squill (Scilla bifolia) in flower, near Torralfina, Lazio, Italy, March

Mark Hamblin / 2020VISION / Spring squill (Scilla verna) in flower, Pembrokeshire Coast National Park, Wales, UK, May.

Mark Hamblin / 2020VISION / Spring squill (Scilla verna) in flower, Pembrokeshire Coast National Park, Wales, UK, May.

Mark Hamblin / 2020VISION / Spring squill (Scilla verna) in flower, Pembrokeshire Coast National Park, Wales, UK, May.

Mark Hamblin / 2020VISION / Spring squill (Scilla verna) in flower, Pembrokeshire Coast National Park, Wales, UK, May.

MYN / Denis Palanque / Squill two sheets (Scilla bifolia) woodland pond, Isere, Rhones-Alpes, France, March. meetyourneighbours.net project

MYN / Denis Palanque / Squill two sheets (Scilla bifolia) woodland pond, Isere, Rhones-Alpes, France, March. meetyourneighbours.net project

Adrian Davies / Spring Squill (Scilla verna) in flower. Shetland, Scotland, UK, May.

Adrian Davies / Spring Squill (Scilla verna) in flower. Shetland, Scotland, UK, May.

Adrian Davies / Spring Squill (Scilla verna) in flower. Shetland, Scotland, UK, May.

Jean E. Roche / Fly on Squill flower (Scilla automnalis) Corsica, France

Paul Harcourt Davies / Autumn Squill (Scilla autumnalis) close up of flowers, Italy, Europe.

Dietmar Nill / Alpine squill (Scilla bifolia) flowers, Germany

Mike Potts / Gorse, Sea Campion and Spring Squill flowering on cliff tops at South Stack, Anglesey, North Wales, UK. April 2009

Silvia Reiche / Siberian Squill (Scilla siberica) flowers, Hoogeloon, Netherlands

Dietmar Nill / Siberian Squill (Scilla sibirica) carpets a woodland floor in Lower Saxony, Germany

Heike Odermatt / Alpine Squill (Scilla bifolia) flower, Germany

Fabio Liverani / Alpine squill (Scilla genus), Emilia Romagna Region, Italy

Fabio Liverani / Alpine squill (Scilla genus), Emilia Romagna Region, Italy

Fabio Liverani / Alpine squill (Scilla genus), Emilia Romagna Region, Italy

Larry Michael / Siberian squill {Scilla sibirica} Wisconsin USA

Paul Hobson / Spring squill {Scilla verne} Shetland Scotland UK

Adrian Davies / Portuguese scilla (Scilla peruviana hughii) flowering, botanical garden, Surrey, UK, April.

Nick Upton / Spring squill (Scilla verna) flowering on coastal headland, Cornwall, UK. April.

Paul Harcourt Davies / Spring crocus (Crocus neapolitanus) with Alpine squill (Scilla bifolia) in flower on mountainside, Mount Terminillo, Umbria, Italy. June.

Paul Harcourt Davies / Alpine squill (Scilla bifolia) in flower, Sibillini, Umbria, Italy. May.

Paul Harcourt Davies / Alpine squill (Scilla bifolia) flowering in mountain woodland, Sibillini, Umbria, Italy. May.

Paul Harcourt Davies / Alpine squill (Scilla bifolia) in flower, just after snow melt, Orvieto, Umbria, Italy. February.

Fabrice Cahez / Alpine squill (Scilla bifolia) close up of flowers, France, March.

Linda Pitkin / Autumn squill (Scilla autumnalis), a nationally scarce species. South West London, England, UK. August.

Linda Pitkin / Autumn squill (Scilla autumnalis), a nationally scarce species. South West London, England, UK. September.

Steve Nicholls / Autumn squill (Scilla autumnalis) a rare plant found around Britain's southwest coasts - here growing in the Avon Gorge, Bristol, UK, August.

Steve Nicholls / Autumn squill (Scilla autumnalis) a rare plant found around Britain's south-west coasts - here growing in the Avon Gorge, Bristol, UK, September.

Steve Nicholls / Spring squill (Scilla verna) growing at Worm's Head, Pembrokeshire, Wales, UK. May.

Steve Nicholls / Spring squill (Scilla verna) growing at Worm's Head, Pembrokeshire, Wales, UK, May.

Steve Nicholls / Glory of the snow (Scilla forbesii) naturalised in a lawn

Linda Pitkin / Autumn squill (Scilla autumnalis), a nationally scarce species, growing in Home Park, Hampton Court Palace, London, August.