Martin Gabriel / Firefly crocus (Crocus sieberi) flowers in snow, Bavaria, Germany, March.

MYN / Dimitris Poursanidis / Winter iris (Iris unguicularis unguicularis) in flower, Crete, Greece.

MYN / Dimitris Poursanidis / Winter iris (Iris unguicularis unguicularis) in flower, Crete, Greece.

MYN / Dimitris Poursanidis / Winter iris (Iris unguicularis unguicularis) in flower, Crete, Greece.

MYN / Dimitris Poursanidis / Winter iris (Iris unguicularis unguicularis) in flower, Crete, Greece.

MYN / Dimitris Poursanidis / Winter iris (Iris unguicularis unguicularis) in flower, Crete, Greece.

Adrian Davies / Stinking / Gladwyn Iris (Iris foetidissima). Red berries in winter. UK. November

Tui De Roy / Bugle-lily (Watsonia tubulosa) bulbs blooming after winter rains, Bontebok National Park, South Africa

Nigel Cattlin / Light snow dusting on flowering large flowered white and purple Crocuses 'Pickwick' in winter, Berkshire, March

Cyril Ruoso / Dutch Crocus (Crocus vernus) flower emerging from snow, Alps, France

Nick Upton / Stinking iris (Iris foetidissima) seed pods with ripe berries in woodland, Somerset, UK, January.

Paul Harcourt Davies / Neglected crocus (Crocus neglectus) flowering in woodland, Monte Rufeno. Orvieto, Italy. February.