- Species and varieties: Verbena is a genus in the family Verbenaceae. The white verbena (Verbena x hybrida) is a popular variety known for its beautiful white flowers. Other common varieties include purple, pink, and red verbena.
- Hybrid or heirloom: White verbena seeds are typically hybrid varieties, bred for their vibrant color and disease resistance. They are not usually considered heirloom seeds.
- Pruning and training: Regular deadheading of spent flowers encourages continuous blooming. Pruning back the plant by one-third in mid-summer can promote a bushier growth and more flowers. No special training is required.
- Fertilization needs: White verbena benefits from a balanced, slow-release fertilizer applied at planting time. Additional feeding with a liquid fertilizer every 4-6 weeks during the growing season can enhance blooming and overall plant health.
- Hardiness zones: White verbena is suitable for USDA hardiness zones 7-11. It can be grown as an annual in cooler climates and as a perennial in warmer regions.
- Climate requirements: White verbena thrives in full sun and well-drained soil. It prefers a warm climate and can tolerate drought once established. It is not frost-tolerant and should be planted after the last frost date in cooler regions.