Dahlia 'Roxy'

An incredible magenta colour with beautiful crimson leaves, flowering without cease for four months at a stretch. More
5 young plants 190469-5 £12.95 Delivery early April
When in stock, please allow up to 2 weeks for despatch.
10 young plants 190469-10 £23.50 Delivery early April
When in stock, please allow up to 2 weeks for despatch.
More Details

An incredible magenta colour with beautiful crimson leaves. This is one of the very best dahlias for pots, flowering without cease for four months at a stretch.

Unfortunately Dahlia 'Roxy' tubers are not available this year due to a crop failure. You may like Dahlias 'Bishop of Auckland' or 'Bishop of Canterbury' instead.

Genus Dahlia
Group/Species Single-flowered Group

Flower has a central disc with a single ring of petals encircling it. Petals may be round or pointed. Click here for more information about dahlia groups.

Variety Roxy
Type Tender Perennial Tuber
Common Name Dahlia
Border Position Middle
Bulb Size I
Soil Type Acid, Chalky, Fertile, Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained
Height 70cm (28in)
Spacing Plant just under the soil surface, 75cm (30in) apart.
Sowing, Seeds, Planting Pot them up undercover March or early April in a generous pot (at least 2 litre) filled with multi-purpose potting compost. Place them in a light, frost-free place and keep the compost moist. Pinch out their growing tips when they have reached about 8" tall. They will have formed bushy plants by the time the frosts have ended and will be in flower by the beginning of July. If you don’t have anywhere to grow the potted tubers, you can put them straight into the ground when the frosts are nearly over, mulching them or protecting with a cloche or protective horticultural fleece if the foliage appears before the frosts are over, but this will delay flowering.
Care Tips Support with a stout stick, tie in every couple of weeks. In the south you can mulch deeply and overwinter them in the ground, alternatively, lift and overwinter your dahlias frost free undercover.
Flowering July - November
Vase Life Only pick dahlias in full flower. Recut the hollow stem ends under water to avoid airlocks.
Cooking Notes All dahlia flowers are edible. I use the petals scattered over salad and to decorate a range of puddings.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Advice & Videos
How to overwinter dahlia tubers

Sarah discusses the best options for overwintering dahlias – lifting or mulching.

Sublime dark dahlia flower arrangement

Sarah shows you how to make a gorgeous large arrangement of dahlias.

Planting narcissi bulbs with dahlias

Have a beautiful display of flowers in your garden from March to the first frosts with this simple planting technique.

New favourite dahlia arrangement

Sarah shows you how to make a quick arrangement of colourful dahlias.

Growing dahlias in pots

Sarah shows you her favourite dahlia varieties for pots, and gives you some tips on how to grow them successfully.

How to take dahlia cuttings

Watch and learn how to take dahlia cuttings – turn 1 tuber into 10.

History of the dahlia

First discovered by Aztec Indians and used for food and medicine, this tuber has an interesting history of cultivation.

Planting up your dahlia tubers

In this video Sarah shows you how to plant up your dahlia tubers.

Understanding dahlia groups

A list of the different dahlia groups, along with some classification info and an example of a variety in each group.

How to plant and grow dahlia tubers

Find out how to grow strong, healthy dahlias this spring – how to plant, look after and overwinter them, and what to do with your bulbs when...


Plant Delivery - When in stock, please allow up to 2 weeks for despatch.

Click here to find out more information about our delivery rates and times.

Dahlia 'Roxy' reviews

* * * * * Average based on 17 reviews

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Reviewed 1st August 2019 by Ian

These flower early and keep going if you dead head and feed them well. The dark leaves are prone to mildew if their position is not quite right but in full sun they are happy. Unfortunately slugs and snails love them as much as I do!

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Reviewed 31st July 2019 by Daughne

Wow just beautiful my first try at growing dahlias and now I’m hooked very very good plants

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Reviewed 31st July 2019 by Janet

* * * * -

Reviewed 31st July 2019 by Ruth

Lovely, grew quickly and are flowering profusely

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Reviewed 31st July 2019 by Gillian

Good to receive a text advising that the plants were en route.

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Reviewed 31st July 2019 by Charles

Plants arrived in excellent condition and are now growing well in garden. Lots of lovely bright flowers.

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Reviewed 24th November 2018 by Sharon

Excellent service and very pleased with plants, beautiful flowers all summer.

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Reviewed 21st November 2018 by Julie

Lovely colours and lasted quite a while. Very thirsty.

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Reviewed 10th November 2018 by Margaret

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Reviewed 8th November 2018 by Susan

The summer heat took their toll on the dahlias this year but the SR service was excellent and plants good quality on arrival.

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Reviewed 19th September 2018 by Susan

They were slow to get started even though I followed instructions to the letter, but are now flowering well and are very pretty.

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Reviewed 12th September 2018 by Sue

unfortunately two of these plants succumbed to a mildew like deposit on their leaves, but nevertheless are still blooming

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Reviewed 8th September 2018 by Ann

Average not as good as I expected

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Reviewed 8th September 2018 by Joanne

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Reviewed 6th September 2018 by DIANE

They started off very well in pots, but I do not think they liked the very hot weather. Maybe I allowed them to dry out.

A really good doer

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Reviewed 31st July 2018 by Cynthia Edwards

I agree with the comments made in the earlier review. Roxy starts early and just keeps on going. There is never a time when there are no flowers open. I grow mine in front of a group of raspberry and white lilies and it is a wonderful combination

Dahlia 'Roxy' just keeps flowering!

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Reviewed 28th January 2017 by Bonar

Last year I bought 3 rooted cuttings of Dahlia 'Roxy' and grew them on before planting them outside in late May. From mid July onwards they just kept flowering until the first frosts. They have intense magenta flowers and the bees seemed to love them too. I grew them in big glazed pots where they seem to flourish and I fed them well. So now I'm looking forward to starting them off again this March... (along with all the others I've started to collect) ;) Recommended!