Dahlias are beautiful, but they can be tricky! This guide explores the reasons why dahlias aren't always easy to grow and offers solutions for success.
Dahlias are tender perennials that must be lifted out of the ground in order to survive in colder climates or treated as an annual. This adds to the workload of a home gardener.
To grow them the following season, the overwintering process is a lot of work to keep them alive and prevent tubers from rotting and drying out.
Dahlias have specific growing requirements that need to be met for optimal growth and flowering. They need full sun and prefer moist, well-draining soil that is rich in organic matter.
Dahlias require some pruning and staking to maintain their shape, prevent flopping over, and encourage bushier growth.
They are more susceptible to pests such as aphids, spider mites, caterpillars, and slugs, as well as diseases like powdery mildew and botrytis.
Dividing tubers can also be a bit tricky, as it requires separating them without damaging the delicate “eyes” or buds that will sprout new growth in the next growing season.