- Species and varieties: White strawflower (Helichrysum bracteatum) is a species of flowering plant in the Asteraceae family. It is known for its papery, everlasting flowers that retain their shape and color when dried. Varieties include dwarf, tall, and mixed color strains, with the white variety being particularly popular for its pure, bright blooms.
- Hybrid or heirloom: White strawflower seeds are typically available in both hybrid and heirloom varieties. Heirloom varieties are open-pollinated and have been passed down through generations, while hybrid varieties are bred for specific traits such as improved vigor, uniformity, and disease resistance.
- Pruning and training: White strawflowers require minimal pruning. Deadheading spent blooms can encourage continuous flowering. In regions where they are grown as perennials, cutting back the plants in late fall can help maintain their shape and vigor.
- Fertilization needs: White strawflowers are not heavy feeders. A balanced, all-purpose fertilizer applied at planting time and once or twice during the growing season is usually sufficient. Over-fertilization can lead to excessive foliage growth at the expense of flowers.
- Hardiness zones: White strawflower seeds are suitable for USDA hardiness zones 8-11. They can be grown as annuals in cooler climates and as perennials in warmer regions.
- Climate requirements: White strawflowers thrive in full sun and well-drained soil. They prefer a warm climate with temperatures ranging from 65°F to 75°F (18°C to 24°C). They are drought-tolerant once established but benefit from regular watering during dry periods.