Two million purple crocus corms were planted last autumn in Great Britain and Ireland as part of Rotary's End Polio Now campaign, which aims to eradicate the disease worldwide.

Rotary clubs across the UK plant purple crocuses as a reminder of their ongoing campaign to protect every last child in the world from polio.

Alan Corkill, Clive Barnwell, Nigel Brookes, Michael Bell, Kat from Salisbury Wildlife Group, Grace Cartwright, Polly Mason, Alan Piper, Louis, Alex and Elena (Image: Spencer Mulholland Photography) ...

There's treasure buried in the deep soil of Sequim - crocus sativus bulbs. They grow the flower that makes the most expensive spice in the world - saffron. Len Horst owns an organic gardening supply ...

Some late-blooming crocus varieties planted around the yard can transform autumn into a second spring, providing a welcome burst of color as other flowers fade and the leaves begin to fall. Nurseries ...

Crocuses are thermoperiodic plants, which means they rely on temperature cues rather than day length to dictate their lifecycle. Their corms (a type of bulb) also usually need a cold spell in autumn ...