70-75 days. The newest member of the Snax carrot family, Purplesnax has a sweet and mellow flavor that makes it a superb variety for enjoying fresh. The lean Imperator roots reach 8-9 inches long with a dazzling combination of color: purple outside and a golden interior. If you’ve had purple carrots that tend to bolt, try Purplesnax, as they stand up longer in the garden.