Dahlia Tubers

How to choose the best dahlias

Dahlias are a firm favourite for home growers and allotment gardeners alike. They’re a delightful summer-flowering bulb and true showstoppers in a vase. Whether you love the huge dinner-plate-sized double blooms or the vibrant single flowers, there’s a huge range from which to choose. Read our FAQs below to help you decide.

Which dahlias are perennial?

All dahlia plants are perennials. This means that they return year after year from the same tuber. However, dahlias are tender perennials which means that the top growth dies back over the winter months to escape the cold. They don’t tolerate frost so be sure to mulch well or, if you live somewhere with very cold winters, grow your dahlias in pots and bring them under cover for the winter months.

Which dahlias are best for shade?

Dahlias grow best in full sun. They originate from central and South America so have evolved to love a warm sunny climate. If you have a spot that gets only a few hours of sunlight a day, choose a lovely single-flowered variety like ‘Bishop of Llandaff’ which should be happy enough to produce a good display. If you have a really shady garden, then why not try one of our begonia tubers instead. Perennial tuberous begonias are bright and long-lasting, even in the deepest shade.

Which dahlia varieties are best for pots?

Dwarf dahlia varieties are best for planting in pots. Their compact nature keeps them in check and avoids the pot becoming top heavy. Dahlia 'Patio Choice' matures at 60cm and features semi-double blooms in bright eye-catching colours. If you want to grow a full-sized dahlia in a container, stake the stems with a sturdy cane as they grow and choose a large, heavy bottomed pot.