- Species and varieties: Black carrot seeds belong to the species Daucus carota. The black carrot is a unique variety known for its deep purple to black color, which is due to high levels of anthocyanins. Popular varieties include 'Pusa Asita' and 'Cosmic Purple'.
- Hybrid or heirloom: Black carrot seeds are typically heirloom varieties, meaning they are open-pollinated and have been passed down through generations. They are valued for their unique color and nutritional benefits.
- Pruning and training: Black carrots do not require pruning or training. However, thinning seedlings to 2-3 inches apart is essential to ensure proper root development and prevent overcrowding.
- Fertilization needs: Black carrots benefit from a balanced fertilizer. It is recommended to use a fertilizer with a higher phosphorus content to promote root development. Avoid high nitrogen fertilizers as they can lead to excessive foliage growth at the expense of root development. Organic compost or well-rotted manure can also be beneficial.
- Hardiness zones: Black carrots can be grown in USDA hardiness zones 3-10. They are quite adaptable and can be grown in a variety of climates.
- Climate requirements: Black carrots prefer a cool to moderate climate. They thrive in temperatures between 55°F and 75°F (13°C to 24°C). They require full sun to partial shade and well-drained, loose soil with a pH between 6.0 and 6.8.