- Species and varieties: Watermelon radish (Raphanus sativus var. caudatus) is a unique variety of radish known for its striking appearance and mild flavor. It is also referred to as 'Red Meat' radish due to its vibrant pink to red interior and greenish-white exterior. This variety is part of the Brassicaceae family.
- Hybrid or heirloom: Watermelon radish is typically considered an heirloom variety. Heirloom seeds are open-pollinated and have been passed down through generations, preserving their unique characteristics and genetic diversity.
- Pruning and training: Watermelon radish does not require pruning or training. However, thinning seedlings to about 2-3 inches apart will ensure proper growth and development. Regularly check for pests and diseases, and remove any affected plants promptly.
- Fertilization needs: Watermelon radish benefits from a balanced fertilizer applied at planting time. A 10-10-10 (N-P-K) fertilizer is suitable. Avoid excessive nitrogen, as it can lead to lush foliage but poor root development. Side-dress with compost or a balanced fertilizer if needed during the growing season.
- Hardiness zones: Watermelon radish can be grown in USDA hardiness zones 2-10. It is a cool-season crop that thrives in moderate temperatures.
- Climate requirements: Watermelon radish prefers cool weather and can be planted in early spring or late summer for a fall harvest. Ideal growing temperatures range from 50°F to 75°F (10°C to 24°C). It requires full sun to partial shade and well-drained soil with a pH of 6.0 to 7.0.