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Is a dahlia an annual or perennial?
Dahlias may be perennials, tender perennials or annuals, depending on the climate zone you live in. In colder climates, a bit of extra care allows you to grow dahlias in the garden year after year.
Are dahlias hardy plants?
With showy blooms in a range of colours, sizes and shapes, dahlias light up sunny borders through summer and into late autumn. They suit most garden styles, from tropical to cottage borders, and smaller types can be grown in containers. As dahlia aren't hardy, they need protection over winter.
How do you look after dahlias in winter UK?
The Dahlia tubers must remain dry but not dry out completely. Place in a dry, frost-free environment. Evenly space in a tray or box and fill with sawdust, spent dry compost or vermiculite. Cover with cardboard or add an extra quilt if you live in a colder climate.