A backyard gardener in Gambo, Nfld., is looking for horticultural answers after pulling up a crop of purple carrots. Most of Ches Davis's carrots were the normal orange hue when he harvested his crop last weekend.But half a row of the vegetables had purple-coloured skins surrounding an orange interior. "I didn't know what to make of it," said Davis, who grows a wide variety of vegetables. Even the flavour of the purple carrots departs from the norm. "The texture of the carrot is completely different, and the flavour is a different, sweet flavour," said Davis, a retired grocer who has visited hundreds of food shops around the world, but has never encountered this variety. Other gardeners who grew carrots from the same source of seeds have not had the same results. "I just knew it couldn't have been the seed – it would have been in [the other gardeners'] beds as well," said Davis. "So it's just a complete mystery to me." Chemical fertilizers could not have contributed to the colour, because Davis doesn't use them. "The only reasoning I can give is the conditioning of the soil where they were grown," said Mae Tizzard, who sold thousands of the seeds from the same batch to Davis and other gardeners.