Dahlias are a boon in late summer. Here some of the top garden designers and plants people choose their favourite dahlia.
Don't miss our guide on how to grow your own dahlias.
Arabella Lennox-Boyd
Arabella Lennox-Boyd is an internationally renowned designer with more than 40 years of experience.
Dahlia ‘Bishop of Auckland’
A most elegant, single-flowered dahlia, very prolific and adored by bees and butterflies. I plant it through Anemanthele lessoniana, Agapanthus ‘Midnight Star’ and Caryopteris x clandonensis ‘Heavenly Blue’ as if in a meadow. One of the best of the Bishop Series. Flowers: July – September. Height: 1m.
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Dahlia ‘Arabian Night’
This dahlia's large, double, velvety dark, burgundy blooms are perfect for mixing in a border. In my own it’s surrounded by Succisa pratensis, Deschampsia and Phlox paniculata ‘Düsterlohe’. The almost black heads add a rich texture to the border. Flowers: June – September. Height: 1.2m.
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Ula Maria
Ula Maria is a Chelsea award-winning garden designer, landscape architect and illustrator with a deep connection to nature.
Dahlia ‘Honka Fragile’
This distinctive star-shaped dahlia with radiating petals that roll inwards at their tips is really striking both in a border and a cut-flower display. The white flowers are delicately edged in pink-red. Never fails to draw attention. Flowers: July – November. Height: 80cm.
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Dahlia ‘Waltzing Mathilda’
A semi-double dahlia with ever so slightly twisting petals that lend it a more relaxed appeal. Flowers are a wash of orangey coral pink, set off against dark purple brown stems and foliage. I love it nestled among large clumps of airy ornamental grasses. AGM. Flowers: July – November. Height: 70cm.
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Jo Thompson
Jo Thompson is an award-winning garden designer, and plantswoman with a love of romantic planting.
Dahlia ‘Lilac Time’
A magnificent yet neat dinner-plate dahlia in shades of pinkish-lilac-blue. It is quite restrained and exudes self-control – I like to grow it with unruly Gaura to create a yin and yang contrast that relaxes the whole feel. Flowers: June – October. Height: 1.1m.
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Dahlia ‘Purple Gem’
A regal dahlia, cactus in form and looking at home in many colour combinations in the border. Hints of deep lilac-blue at the centre of the flowers, becoming lighter along the petals, make this a very useful cultivar both in the border and in a vase. Flowers: July – September. Height: 1m.
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Dahlia merckii
So restrained, so elegant – single flowers of palest mother-of -pearl pink with muted yellow centres. The flowers sit high atop the tall stems and nod gently, a very lovely punctuation in the border. Unlike most dahlias, it is fairly hardy in the UK. Flowers: July – September. Height: 1.5m.
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Where to buy dahlias
- Halls of Heddon West Heddon Nursery, Heddon on the Wall, Newcastle upon Tyne NE15 0JS. Tel 01661 852445, hallsofheddon.com
- J Parkers 16 Hadfield Street, Stretford, Manchester M16 9FG. Tel 0161 848 1100, jparkers.co.uk
- Peter Nyssen 124 Flixton Road, Urmston, Manchester M41 5BG. Tel 0161 747 4000, peternyssen.com
- Sarah Raven 1 Woodstock Court, Blenheim Road, Marlborough, Wiltshire SN8 4AN. Tel 0345 092 0283, sarahraven.com
Editor's note: This feature was originally published on 15 May 2025 and was updated on 28 July 2026.
