They are also thought to require a great deal of care. Both of these statements are true to some extent. There is a great variety of form in dahlias, from the showy dinner-plate size to the bright, little single ones.
Dahlias require some special care, especially lifting for winter storage.
However, with minimum care, beautiful dahlia blooms will grace your garden from July until frost. Dahlias should be planted in a sunny location. The soil should be rich and well-drained with a pH of about 6.5. Wait until all danger of spring frost is past before planting. Bedding dahlias can be planted 9 to 12 inches apart.