Dahlia Flower Plants

Buy One Get One Half Price On All 3L Dahlia Plants

Dahlias are the stars of the garden border, providing a dazzling show of form and colour. Available in a fantastic variety of hues, from buttery yellows to deep maroons, these showstoppers deliver an explosion of blooms that last all summer long. With their excellent vase life, they’re also the perfect choice for the allotment or cut flower garden!

At D.T. Brown, we have a wonderful range of dahlia plants to choose from, including classic ball dahlias, stunning single blooms, and more. Supplied in 3-litre pots, all of our dahlia plants are dispatched at the perfect time for planting and arrive pre-pinched to encourage bushy, vigorous growth. Find your ideal dahlias below, or explore our dahlia tubers and dahlia seeds for more beautiful options for your garden.

When to Plant Dahlias

Plant dahlia plants outdoors from late May to early June, once the risk of frost has fully passed and the soil has warmed through. Dahlias need warmth and sunlight to thrive, though they will tolerate some shade; for best results, choose a spot with good sun exposure and shelter from strong winds. Our garden-ready potted dahlia plants arrive ready for planting in their final positions, while younger dahlia plug plants may need to be grown on indoors and hardened off before planting out.

How to Grow Dahlia Plants

Choose a sunny position with well-drained soil. Dig in compost before planting to improve structure and nutrition. Position your dahlia plants at the same depth they were growing in their pots, and firm the soil gently around them. Water them well after planting and continue to water during dry spells. Deadhead regularly to keep them flowering, and stake taller varieties to prevent them from flopping. As half-hardy perennials, dahlia plants will need protection if you want them to bloom again next year; ideally, lift tubers in autumn to overwinter indoors before replanting next spring.

Buy Dahlia Plants from D.T. Brown

Give your summer garden a head start with D.T. Brown’s dahlia plants. Like all of our flower plants, our potted dahlias are specially selected for unbeatable colour, eye-catching impact and superior performance in UK gardens, and are delivered directly to your door at the ideal time for planting. Order now with D.T. Brown for fast UK delivery – 100% satisfaction guaranteed.