Dahlias are quite heavy feeders, so once a month, applications of a low-nitrogen fertilizer are also helpful for ensuring they thrive. While dahlia tubers can survive winters outside in zones 7 ...

The owner of Goldenrod Gardens gushes about dahlia flowers like some ... mixes like MiracleGro can fry a tuber and turn it into mush. Don’t add fertilizer until after plants have started growing.” ...

New plants can be expensive and it's easy to grow your own from cuttings. All you need to do is trick the dahlia tuber into making new shoots in late winter. These can be snipped off and are so ...