When do dahlias reshoot?

Dahlias typically reshoot in the spring once the risk of frost has passed and the soil has warmed up, usually around late April to early June, depending on the climate. If they were planted as tubers, they may start to sprout within a few weeks after being placed in well-draining soil. If you’ve stored tubers over winter, it's best to plant them after the last frost date for your region. Regular watering and warm temperatures will encourage healthy growth.