Chantenay Organic Carrot Seeds 4032 Heirloom Vegetable. Orange-scarlet roots are smooth, even shaped and free from eyes. These meaty carrots consistently grow to 15 cm (6â€³) in length and 2.5 cm (1â€³) thick. A garden staple that is a good choice for soils that tend to be heavier. Introduced in 1929.