1 tuber 229204-1 £3.95 Delivery late February
When in stock, please allow up to 2 weeks for delivery.
3 tubers 229204-3 £10.95 Delivery late February
When in stock, please allow up to 2 weeks for delivery.
6 tubers 229204-6 £20.50 Delivery late February
When in stock, please allow up to 2 weeks for delivery.
1 x 3 litre plant 229204-3L £9.95 Delivery late May
When in stock, please allow up to 2 weeks for delivery.

Or buy this as part of our Supreme Singles Dahlia Collection.

More Details

I came across Dahlia 'Blue Bayou' three years ago in the wonderful De Boschhoeve Dutch garden and have only just recently managed to find enough tubers to sell. New and very exciting.

Our dahlias:

  • are first class, healthy tubers – the largest and best you can buy.
  • come with full planting, spacing and cultivating instructions for beginner gardeners
  • tubers should be potted up when they arrive and be kept in a light, frost-free place until the frosts are over and then be planted into the garden.

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
Variety Blue Bayou
Type Tender Perennial Tuber
Border Position Back, Middle
Bulb Size I
Soil Type Acid, Chalky, Fertile, Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained
Height 1m (3ft 3in)
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
New favourite dahlia arrangement

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

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.

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...

History of the dahlia

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


Bulb Delivery - When in stock, please allow up to 2 weeks for delivery.

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

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

Dahlia 'Blue Bayou' reviews

* * * * * Average based on 4 reviews
Really pretty.

* * * * *

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

* * * * -

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

* * * * *

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

* * * * *

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!