maturity date: 90 days. the rutabaga has been around for a few hundred years we proudly offer heirloom non gmo seed. Grow these like you would a turnip. And they will hold. In the garden well and store for months. Rutabagas have a better flavor than. Turnips we recommend not letting them get bigger than a softball. Most places these go in early summer. But in zones 7b and higher. Will do great as a fall crop. Happy growing!!!