- Species and varieties: Sweet radish seeds belong to the species Raphanus sativus. There are several varieties of sweet radish, including 'French Breakfast', 'Cherry Belle', and 'White Icicle'. Each variety has its own unique characteristics in terms of size, shape, and flavor.
- Hybrid or heirloom: Sweet radish seeds can be both hybrid and heirloom. Heirloom varieties like 'French Breakfast' have been passed down through generations and are known for their consistent flavor and growth patterns. Hybrid varieties are bred for specific traits such as disease resistance and uniformity.
- Pruning and training: Sweet radishes do not require pruning or training. However, thinning the seedlings to about 1-2 inches apart will ensure proper growth and development.
- Fertilization needs: Sweet radishes are relatively low-maintenance when it comes to fertilization. A balanced, all-purpose fertilizer applied at planting time is usually sufficient. Avoid excessive nitrogen, as it can lead to lush foliage at the expense of root development.
- Hardiness zones: Sweet radish seeds are suitable for USDA hardiness zones 2-10. They are quite versatile and can be grown in a wide range of climates.
- Climate requirements: Sweet radishes prefer cool weather and can be planted in early spring or fall. They thrive in temperatures between 50-70°F (10-21°C). In warmer climates, they can be grown in partial shade to avoid excessive heat.