Dahlias thrive in a sunny spot in fertile, well-drained soil. They're tender plants so can't be planted out until the danger of frost has passed in late spring, but on light soil ...
As the majority of dahlias are perennials, they should come back next year. However, it’s important to note that they are very tender perennials - which means that they may not come back next ...
Several perennials may need pinching a few times – take out the initial bud of a dahlia and then pinch out the resulting side growth. Chopping back perennials in late-spring will make bushier ...