Visitors to Hardwick Hall will spot some changes to its historic garden this spring as the first phase of a five-year project begins to bloom.
More than 3,000 purple crocuses are forming a swathe of colour across the 16th century gardens run by the National Trust.
The bulbs were planted in the gardens in October as part of the Bolsover Rotary Club’s End Polio Now campaign.
The club organised the planting to boost funds, raise awareness and eradicate the disease that kills and maims thousands of children in India, Pakistan, Afghanistan and Africa every year.
It was so successful more bulbs will be planted over the next four years, starting later this year.
Geoff Davis, of the Rotary Club, said: “The purple crocuses signify the spot of purple dye used to mark the fingers of the millions of children who have been inoculated.”