Dahlias must be planted after the risk of frost has passed ... The dark foliage of Canna ‘Tropicanna’ paired with hot-coloured crocosmia, for example, makes for a stunning border.” The Independent is ...

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 their tubers can be ...