- Species and varieties: Butternut squash (Cucurbita moschata) is a type of winter squash that comes in several varieties, including 'Waltham', 'Early Butternut', and 'Ponca'. These varieties differ in size, shape, and growing season length.
- Hybrid or heirloom: Butternut squash seeds can be either hybrid or heirloom. Heirloom varieties, such as 'Waltham Butternut', are open-pollinated and have been passed down through generations. Hybrid varieties are bred for specific traits like disease resistance and uniformity.
- Pruning and training: Butternut squash plants are vining and may require training to grow on trellises or supports. Pruning is generally not necessary, but removing any diseased or damaged leaves can help improve air circulation and plant health.
- Fertilization needs: Butternut squash plants benefit from a well-balanced fertilizer. Apply a balanced fertilizer (e.g., 10-10-10) at planting time and side-dress with compost or a nitrogen-rich fertilizer during the growing season. Avoid over-fertilizing, as this can lead to excessive foliage growth at the expense of fruit development.
- Hardiness zones: Butternut squash is best suited for USDA hardiness zones 3-10. It requires a long growing season with warm temperatures.
- Climate requirements: Butternut squash thrives in warm climates with full sun exposure. It requires a growing season of at least 100-120 days with temperatures consistently between 70-95°F (21-35°C). It is sensitive to frost and should be planted after the last frost date in spring.