January

Hellebore

Van Cleef & Arpels gold, diamond and mother-of-pearl Rose de Noël medium clip, £16,900

Winter’s indefatigable bloomer, the Eurasian hellebore is steeped in myth, representing both resilience and danger (every part of the plant is highly toxic for humans, and throughout the Middle Ages it was a staple in witchcraft).

Find it: in the deep shade of deciduous trees – Regent’s Park has some especially beautiful pale-green varieties.