The Sublime Dark Dahlia Collection

The absolute richest and most sublime dark dahlias which I love to grow each year. More
5 tubers (1 of each) 229198-5 £16.50 Delivery late February
When in stock, please allow up to 1 week for delivery.
10 tubers (2 of each) 229198-10 £27.95 Delivery late February
When in stock, please allow up to 1 week for delivery.
More Details

The absolute richest and most sublime dark dahlias which I love to grow each year.

This collection includes:

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.

Genus Dahlia
Type Tender Perennial Tuber
Border Position Back, Middle
Bulb Size 1
Soil Type Acid, Chalky, Fertile, Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained
Height 100cm (39in)
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
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 overwinter dahlia tubers

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

How to take dahlia cuttings

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

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...


Bulb Delivery - When in stock, please allow up to 1 week for delivery.

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

The Sublime Dark Dahlia Collection reviews

* * * * * Average based on 3 reviews
Stunning collection

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Reviewed 22nd August 2016 by Kath Staples

I don't normally write reviews but I am so thrilled with this Dahlia collection that I wanted to share the joy I have had with these stunning flowers. They are strong healthy plants covered in flowers. I have floated some flower heads in a shallow bowl of water and they look stunning. I will buy more tubers next year.

Pure Class...

* * * * *

Reviewed 6th August 2015 by Tracey

I have never been a huge fan of this old fashioned flower.....until now!
Boy have these beauties changed my mind. The dry cigar looking things arrive and you think to your self "what on earth could possably emerge from these?" Slowly they bust into life then they really get going. Huge healthy stout plants that are true to type and ready to explode into a firework display of gorgousness.......get the drift?
Buy some, you wont be disapppointed.

Sublime and supreme

* * * * *

Reviewed 26th August 2014 by Mary Bevan

These dahlias are the centrepiece in a sumptuously coloured new border planted this year. They were planted late so I did not have extreme expectations for this year: how wrong I was. They have performed above and beyond all expectations, and the border looks fabulous. I am delighted with them. So much so I am planning to include them in an extension of the border this Autumn.