Marie Read / Purple Crocus (Crocus angustifolius) flowers emerging through snow in early spring, New York, USA.

Kerstin Hinze / Crocus (Crocus napolitanus) flowering in spring garden at Schlosspark Husum, Schleswig-Holstein, Germany

Kerstin Hinze / Crocus (Crocus napolitanus) flower, Schlosspark Husum, Schleswig-Holstein, Germany

Ernie Janes / Spring Crocus Aconites Polyanthus and snowdrops flowering in Garden Setting Norfolk, February

Ernie Janes / Spring Crocus Aconites Polyanthus and snowdrops in Garden Setting Norfolk March

Ernie Janes / Spring Crocus and Winter Aconites in Garden Setting Norfolk March

Ernie Janes / Spring Crocus flowers, UK

Ernie Janes / Spring Crocus Norfolk february

Ernie Janes / Spring Crocus, Norfolk, february

Ernie Janes / Spring Crocus with Ladybird (Coccinella) on stem Norfolk february

Ernie Janes / Spring Crocus and Winter Aconites in Garden Setting Norfolk March

Ernie Janes / Spring Crocus and Winter Aconites in Garden Setting Norfolk March

Ernie Janes / Spring Crocus and Winter Aconites in Garden Setting Norfolk March

Ernie Janes / Spring Crocus and Winter Aconites in Garden Setting Norfolk March

MYN / Marko Masterl / Spring crocus (Crocus angustifolius) in flower, Kostanjevica, Slovenia, March, meetyourneighbours.net project

MYN / Marko Masterl / Spring crocus (Crocus angustifolius) in flower, Kostanjevica, Slovenia, March, meetyourneighbours.net project

Konstantin Mikhailov / Eastern pasqueflower / Prairie smoke / Prairie crocus / Cutleaf anemone (Pulsatilla patens) in flower, Orenburgsky State Nature Reserve, Zapovednik, Orenburg Steppe Region, Russia at the border with K...

Konstantin Mikhailov / Eastern pasqueflower / Prairie smoke / Prairie crocus / Cutleaf anemone (Pulsatilla patens) in flower, Orenburgsky State Nature Reserve, Zapovednik, Orenburg Steppe Region, Russia at the border with K...

Ernie Janes / Spring Crocus (Crocus angustifolius) flowers with morning dew, Norfolk, UK, March

Ernie Janes / Spring Crocus (Crocus angustifolius) flowers with morning dew, Norfolk, UK, March

Ernie Janes / Spring Crocus (Crocus angustifolius) with Ladybird, Norfolk, UK, February

Ernie Janes / Spring Crocus (Crocus vernus), Snowdrops (Galanthus sp) and Winter Aconites (Eranthis sp) flowering in garden, Norfolk, UK, March

Ernie Janes / Spring Crocus (Crocus angustifolius) and Winter Aconites (Eranthis sp) flowering in garden, Norfolk, UK, March

Ernie Janes / Spring Crocus (Crocus angustifolius), Snowdrops (Galanthus sp) and Winter Aconites (Eranthis sp) flowering in garden, Norfolk, UK, March

Ernie Janes / Spring Crocus (Crocus angustifolius) and Winter Aconites (Eranthis sp) flowering in garden, Norfolk, UK, March

Ernie Janes / Spring Crocus (Crocus angustifolius), Snowdrops (Galanthus sp) and Winter Aconites (Eranthis sp) flowering in garden, Norfolk, UK, March

Marie Read / Purple Crocus (Crocus angustifolius) flowers emerging through snow in early spring, New York, USA.

Steve Nicholls / Naturalised Spring / Giant Dutch crocus (Crocus angustifolius) flowering, Inkpen Crocus field, SSSI, Berkshire. UK, March

Orsolya Haarberg / Crocus (Crocus heuffelianus) flowers, Szatmar-Bereg, Hungary.

Orsolya Haarberg / Crocus (Crocus heuffelianus) flowers, Szatmar-Bereg, Hungary.

Angelo Gandolfi / Carpet of Purple Crocuses (Crocus angustifolius) in flower, Retezat National Park, South Carpathian Mountains, Romania

Angelo Gandolfi / Snowdrops (Galanthus sp) among Purple Crocuses (Crocus angustifolius) in flower, Retezat National Park, South Carpathian Mountains, Romania

Philippe Clement / Crocus flowers (Crocus sp.) in garden, Belgium March

Paul Harcourt Davies / Spring purple crocus (Crocus angustifolius) flowering in spring on the slopes of the Apennine mountains, Italy

Paul Harcourt Davies / Spring purple crocus (Crocus angustifolius) flowering soon after snow has melted, Apennine mounains, Italy

Paul Harcourt Davies / Spring purple crocus (Crocus angustifolius) flowering, Apennine mounains, Italy

Paul Harcourt Davies / Spring purple crocus (Crocus angustifolius) flowering on hillside, Italy

Kerstin Hinze / Crocus (Crocus napolitanus) flowering in spring garden at Schlosspark Husum, Schleswig-Holstein, Germany

Kerstin Hinze / Crocus (Crocus napolitanus) flowering in spring garden at Schlosspark Husum, Schleswig-Holstein, Germany

Silvia Reiche / Dutch Crocus (Crocus vernus) emerging from snow, Hoogeloon, Netherlands

Martin Gabriel / Wild crocus from Turkey {Crocus ancyrensis} flowering in garden, Bavaria, Germany

Martin Gabriel / Wild crocus from Turkey {Crocus ancyrensis} buds, Bavaria, Germany

Martin Gabriel / Wild crocus from Turkey {Crocus ancyrensis} flowering in garden, Bavaria, Germany

Tony Evans / Meadow saffron flowering in grass field {Colchicum autumnale} UK

GEORGETTE DOUWMA / Purple crocus {Crocus angustifolius} Kew Gardens, London

DAVID TIPLING / Early Spring flowers amongst grass, including crocus {Romulea} and snowdrops {Galanthus genus} in February, UK

Fabio Liverani / Purple crocus (Crocus angustifolius), Emilia Romagna Region, Italy

Fabio Liverani / Purple crocus (Crocus angustifolius), Emilia Romagna Region, Italy

Fabio Liverani / Purple crocus (Crocus angustifolius), Emilia Romagna Region, Italy

Fabio Liverani / Purple crocus (Crocus angustifolius), Emilia Romagna Region, Italy

Andrew Cooper / Sand crocus {Romulea columnae} UK