1 tuber 229204-1 £4.50
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3 tubers 229204-3 £10.95
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6 tubers 229204-6 £18.50
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1 x 3 litre pot 229204-3L £10.50 Delivery late May
When in stock, please allow up to 3-4 weeks for despatch. For fruit & veg bare roots/crowns, please allow up to 2 weeks for despatch.
More Details

A truly beautiful and nectar-rich variety, excellent for butterflies and bees.

This can be gift wrapped in our exclusive hessian sack, with ribbon and a Sarah Raven gift card. You will be able to add this to your basket once you begin the checkout process. To add a gift message to your order, simply fill out the details at the delivery stage of the checkout.

Please note: only items which are showing ‘in stock’ can be gift wrapped.

Genus Dahlia
Group/Species Anemone Group

Centre compromises of dense elongated tubes rather than a disc. The outer parts have one or more rings of flattened petals. Click here for more information about dahlia groups.

Variety Blue Bayou
Type Tender Perennial
Common Name Dahlia
Border Position Cutting Garden
Bulb Size I
Soil Type Broad Tolerance
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained
Height 1.2m (4ft)
Spacing 75cm (30in)
Sowing, Seeds, Planting Plant just under the soil surface after the last frosts. Alternativley 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
New favourite dahlia arrangement

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

Understanding dahlia groups

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

History of the dahlia

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

How to plant and grow dahlia tubers

Discover how to grow strong, healthy dahlias – how to plant, look after and overwinter them, and what to do with your bulbs when they arrive.

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.

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.


Bulb Delivery - When in stock, please allow up to 5 days for despatch.

Plant Delivery - When in stock, please allow up to 3-4 weeks for despatch. For fruit & veg bare roots/crowns, please allow up to 2 weeks for despatch.

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

Dahlia 'Blue Bayou' reviews

* * * * * Average based on 30 reviews

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Reviewed 25th October 2019 by David

Another lovely plant, thoroughly recommended

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Reviewed 22nd September 2019 by Mary-Jane

It didn't show at all. I've bought lots of Dahlias from you and others have mostly worked, so I treated this in the same way as previously, so surprised that it failed.

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Reviewed 24th August 2019 by Karen

The delivery arrived as planned, the plants were very well packed and good quality large plants. Transplanted each individually into large pots, took a while to get going, but now are blooming well and the colour is just perfect

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Reviewed 17th August 2019 by Jane

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Reviewed 6th August 2019 by Pam

On arrival there was very little root system, so when repotting I made sure to add bone meal and chicken pellets to aid root growth. Sadly the plant still looks fragile. Disappointing.

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Reviewed 5th August 2019 by Anna

These ones came up a bit better. 2 of 3 so better than others.

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Reviewed 4th August 2019 by Duncan

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Reviewed 2nd August 2019 by Pat

Healthy and a beautiful colour

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Reviewed 1st August 2019 by Jennifer

Good service.
The dahlia has done very well.

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Reviewed 31st July 2019 by ROSALIND

Lovely dahlia unusual.no.

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Reviewed 31st July 2019 by Margaret

Still waiting for this to flower !

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Reviewed 31st July 2019 by Christina

First tuber had no eyes, quickly rectified. New tuber has not yet flowered.

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Reviewed 31st July 2019 by Alison

Has not grown well at all. Started off in a pot,, then planted out but has not done well at all

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Reviewed 31st July 2019 by Maura

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Reviewed 31st July 2019 by Kay

Lovely colour happy with growth

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Reviewed 31st July 2019 by Angie

Another good dahlia to add to my collection

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Reviewed 31st July 2019 by Margaret

Good communication, fast delivery, quality plants

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Reviewed 31st July 2019 by Belinda

the plant didn't do very well, it took a very long time to come to and has only just flowered.

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Reviewed 31st July 2019 by Tony

Very good quality tubers that have grown into very healthy plants that are just about to flower

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Reviewed 31st July 2019 by Joanne

Good size tuber that grew on quickly in a pot in my unheated greenhouse. Planted out the end of May and is now a really good size plant with multiple stems and flower buds, I can't wait until they open (now end of July).

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Reviewed 31st July 2019 by Diane

Probably my fault for not reading the description of the dahlia at point of order, not a prolific flowerer perhaps best suited to the open ground not a container

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Reviewed 31st July 2019 by Virginia

A lovely dahlia with beautiful flowers loved by bees and butterflies but quite tricky to look after!

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Reviewed 31st July 2019 by Claire


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Reviewed 31st July 2019 by Gillian

Excellent service. The tubers arrived in good condition, all quickly grew into strong healthy plants. Look good with my Totally Tangerine dahlias.

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Reviewed 31st July 2019 by Ken

All dahlia bought this challenging year have successful

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Reviewed 31st July 2019 by Dawn

Very successful- even better in real life than the photos on the website- a really lovely dahlia

Really pretty.

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Reviewed 10th September 2018 by eileen donovan

This has grown very well, and the flowers are gorgeous. I hope to over-winter the tuber to grow again next spring. Recommended.

Gorgeous flower

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Reviewed 23rd August 2018 by Beth Banigan

I thought that the flower was incredibly beautiful and eye-catching. However, I didn't get as many blooms as I hoped for, in spite of a prime position in the sun on the porch. Maybe I needed a bigger pot or it prefers to be planted in the ground. I will definitely try this again as it's so lovely.

A real beauty

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Reviewed 21st July 2018 by Irene Spencer-Woods

So pleased i have found this dahlia; it is stunning and became a large plant in its first year. I now wish that I had used a bigger pot because I think the size of pot I normally use for dahlias is too small but I am reluctant to re-pot in case I damage the growth. I have not noticed many pollinating insects on it but that could be about the position. Highly recommended.

A Rare Beauty

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Reviewed 16th June 2014 by Arthur

I've grown this dahlia for 3 seasons now in our little garden and it has to be the one that people stop to look at from the path that goes by our front garden the most. When the sun shine's its large, soft lilac petals look radiant and its centre sparkles attracting the buzz of bees despites it doubled centred appearance. In the evening it takes on a more sultry, mysterious -Alice and wonderland appearance, I'll never go a summer without setting this one - unique and magical!