- Species and varieties: Dahlias belong to the Asteraceae family and are native to Mexico. There are numerous species and varieties of dahlias, with the pink dahlia being a popular choice for its vibrant color and beautiful blooms. Some common varieties of pink dahlias include 'Pink Sylvia', 'Pink Magic', and 'Pink Attraction'.
- Hybrid or heirloom: Dahlias can be both hybrid and heirloom varieties. Hybrid dahlias are often bred for specific traits such as color, size, and disease resistance. Heirloom dahlias are traditional varieties that have been passed down through generations and are valued for their historical significance and unique characteristics.
- Pruning and training: Dahlias benefit from regular deadheading to encourage continuous blooming. Pinching back the growing tips when the plants are young can promote bushier growth. Staking taller varieties is recommended to support the heavy blooms and prevent the stems from breaking.
- Fertilization needs: Dahlias are heavy feeders and benefit from regular fertilization. A balanced fertilizer with equal parts nitrogen, phosphorus, and potassium (such as a 10-10-10 formula) can be applied every 3-4 weeks during the growing season. Avoid high-nitrogen fertilizers, as they can promote excessive foliage growth at the expense of blooms.
- Hardiness zones: Dahlias are typically grown in USDA hardiness zones 8-11. In cooler climates, they can be grown as annuals or their tubers can be dug up and stored over winter.
- Climate requirements: Dahlias thrive in full sun and require at least 6-8 hours of direct sunlight per day. They prefer well-drained soil with a pH level between 6.0 and 7.5. Dahlias need a moderate amount of water, with the soil kept consistently moist but not waterlogged.