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 ...

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.

Saffron crocus grows best in full sun conditions with rich, well-draining soil and temperatures around 70 degrees Fahrenheit. It is hardy in USDA zones 6 through 9, where its corms can be left in the ...

Crocuses are beautiful, cup-shaped flowers synonymous with spring. Colors vary from white to yellow to purples and multicolored blooms. Crocuses are some of the earliest bloomers in the garden, ...

Add Yahoo as a preferred source to see more of our stories on Google. Apr. 8—This year, crocuses have been popping up in places that they haven't planted or popped up before. Even though the flowers ...

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Spring blooming crocuses are flowering herb-like perennials of the Iris family, Irisdaceae. They are members of the genus Crocus. The crocus genus contains several dozen species that originated in ...

Of all the small spring-bloomers, crocus, with its bright colors sometimes poking right up out of the snow, is a seasonal favorite. Late winter snow seldom damages these flowers; they simply close ...

Thousands of purple crocuses have been planted at a research station outside Norwich - symbolising the city's vital role in the global effort to eradicate polio. The vividly-coloured flower is the ...