Trim back dead foliage in Autumn.
This plant has many names including snake’s head fritillary, snake’s head (the original English name), chess flower, frog-cup, guinea-hen flower, guinea flower, leper lily (because its shape resembled the bell once carried by lepers), Lazarus bell, chequered lily, chequered daffodil, drooping tulip or, in northern Europe, simply fritillary.
The flower has a chequered pattern in shades of purple, or is sometimes pure white. It flowers from March to May, it’s also quite rare in the wild. They like moist well drained soil.
Plant 12cm (5in) deep, well-drained soil, taking care not to damage the fragile bulbs. Also a little sand or gravel in the hole for good drainage if possible.