Large, pure white blooms of semi-cactus dahlia 'Kenora Challenger'

White dahlias to grow

We recommend five white dahlia varieties, in a range of flower types.

With their large, dramatic flowers, dahlias make attractive and reliable garden plants.


White-flowered dahlias are particularly versatile. Theres’s no colour they don’t look good with and, if preferred, they make a lovely addition to a white-themed garden growing with other white flowers.

While the more flamboyant dahlias, like cactus and pompon types are gorgeous, don’t forget to get to include some single-flowered varieties so that pollinating insects can reach the pollen and nectar.

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We pick some of the best white dahlias to grow, below.

‘Ruskin Bride’

Hint-of-pink semi-cactus dahlia 'Ruskin Bride'
Hint-of-pink semi-cactus dahlia ‘Ruskin Bride’

‘Ruskin Bride’ is a fabulous semi-cactus dahlia with just the faintest hint of pink on its white petals. It pairs well with pink and purple flowers.

Height x spread: 1.2m x 30cm.

‘Joe Swift’

Starry white blooms of single dahlia 'Joe Swift'
Starry white blooms of single dahlia ‘Joe Swift’

With starry, single blooms, ‘Joe Swift’ is a fabulous pollinator-friendly choice, with white flowers that contrast against bronze foliage. Similar varieties include ‘Happy Single Princess’ and ‘Twyning’s After Eight’.

H x S: 1.5m x 40cm.

‘Fiona Stewart’

Lilac-tinted ball dahlia 'Fiona Stewart'
Lilac-tinted ball dahlia ‘Fiona Stewart’

Dahlia ‘Fiona Stewart’ is a ball type dahlia, with petals that start out a pale lilac colour, before turning white as they mature.

H x S: 1.2m x 40cm.

‘Trelyn Kiwi’

Pale-pink semi-cactus dahlia 'Trelyn Kiwi'
Pale-pink semi-cactus dahlia ‘Trelyn Kiwi’

This cactus dahlia is a slightly shorter-growing variety with white petals that become flushed with pale pink as the mature.

H x S: 1m x 50cm.

‘Kenora Challenger’

Large, pure white blooms of semi-cactus dahlia 'Kenora Challenger'
Large, pure white blooms of semi-cactus dahlia ‘Kenora Challenger’

This magnificent semi-cactus dahlia has large, pure white blooms that are sure to draw the eye. It has petals that are broader at the base, distinguishing it from cactus dahlias.


H x S: 1.2m x 30cm.

Dont forget to deadhead

Once they start flowering dahlias are capable of continuing to do so for months on end. However, you do need to deadhead them to ensure this. Follow Monty Don’s tips on prolonging flowering.