I planted Early Nantes V earlier in the year and am just starting to harvest them. Some are orange but some are white. Why is this?
White carrots are a result of cross pollination with their native cousin Queen Anne's Lace. If you are saving carrot seed yourself you have to isolate the plants as Queen Anne's Lace is a widespread (and very beneficial) wild plant (some may say weed). If this was seed you bought, I would not hesitate to report the issue and the batch/lot information off the seed packet. A reputable seed seller should take action on the issue.