Dahlia 'Penhill Dark Monarch'

A mix of soft apricot, coffee mousse and raspberry in this 'Café au Lait'-style and size of dahlia. More
1 tuber 229318-1 £3.95 Delivery late February
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When in stock, please allow up to 2 weeks for delivery.
3 tubers 229318-3 £7.95 Delivery late February
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When in stock, please allow up to 2 weeks for delivery.
1 x 3 litre plant 229318-3L £9.95 Delivery mid May
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When in stock, please allow up to 2 weeks for delivery.

Or buy this as part of our Flamboyant Dahlia Collection and Whopper Dahlia Collection.

More Details

A mix of soft apricot, coffee mousse and raspberry in this 'Café au Lait'-style and size of dahlia. A true beauty gracing the garden and tumbling from a vase.

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 Decorative Group

Broad and flat petals, normally bluntly pointed, with no central disc showing. Click here for more information about dahlia groups.

Variety Penhill Dark Monarch
Type Tender Perennial Tuber
Common Name Dahlia
Border Position Back, Middle
Bulb Size I
Soil Type Acid, Chalky, Fertile, Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained
Height 1.5m (4ft 11in)
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
Harvesting Flower production 5 months
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
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.

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.

Planting up your dahlia tubers

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

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...

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.

Delivery

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 'Penhill Dark Monarch' reviews

* * * * - Average based on 29 reviews

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Reviewed 16th August 2019 by Sarah

Planted upon arrival as instructions. Took a long time to emerge, growing okay but still not particularly big. Not sure it will flower as no sign of buds.

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Reviewed 16th August 2019 by Linda

This has grown but slow to flower

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Reviewed 15th August 2019 by Linda

This has grown but slow to flower

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Reviewed 12th August 2019 by Frances

Still waiting for the flower but should be through soon

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Reviewed 6th August 2019 by Victoria

This is the only one of the 3 tubers that has produced flowers as intended. Their heads are huge and pretty impressive. As I've only one flower at present I am looking forward to hopefully getting more and being able to pick a few to bring indoors.

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Reviewed 3rd August 2019 by Graham

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Reviewed 3rd August 2019 by Elaine

Very pleased with the dahlias I purchased. They are now flowering and lok beautiful in the garden

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Reviewed 3rd August 2019 by Jenifer

Only just opening, but looks lovely so far

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Reviewed 1st August 2019 by Betty

No flowers but healthy plant,

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Reviewed 1st August 2019 by Kate

LOvely but a little quick to flop as a cut flower

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Reviewed 1st August 2019 by Caroline

Seems less vigorous than Penhill watermelon, but gorgeous colour...

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Reviewed 31st July 2019 by Julie

Yes came on well in the conservatory and is happy now outside.

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Reviewed 31st July 2019 by Daniel

The product was great, it came packaged really well.

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Reviewed 31st July 2019 by Patrick

Same as previous, still waiting for the flowers.

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Reviewed 31st July 2019 by Miranda

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Reviewed 31st July 2019 by James

Again good quality tubers , i think i brought them in the sale , am looking forward to seeing them flower as I haven't brought these before .

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Reviewed 31st July 2019 by Gillian

Still waiting for it to flower

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Reviewed 31st July 2019 by Gina

A nice colour and sturdy plant.

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Reviewed 31st July 2019 by Mr Craig

I am still awaiting the first flowers so I cannot comment, plant looks healthy enough though.

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Reviewed 31st July 2019 by Lucy

Plant arrived in excellent condition, packed well.Bloomed not long after planting and is stunning.Another bloom on it's way.

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Reviewed 31st July 2019 by Erica

Prompt service strong plants lots of leaf with buds starting to appear

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Reviewed 31st July 2019 by Lisa

It hasn’t grown unfortunately

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Reviewed 31st July 2019 by Glenda

Always excellent service and great tubers

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Reviewed 31st July 2019 by Sue

Gorgeous quality tuber. Excellent service

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Reviewed 31st July 2019 by Melanie

Healthy tuber now growing

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Reviewed 31st July 2019 by Marilyn

Excellent service and the tubers have all grown and about to flower.

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Reviewed 29th May 2019 by Melanie

Healthy tuber now growing

Show stopper!

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Reviewed 10th October 2018 by Angie

This is so stunning, a mix of pink, purple, even coral hints and a slightly yellow centre. The flower heads are enormous rivalling the Cafe au Lait and I have never seen a dahlia like it. Needs plenty of support though due to heavy branches. Great buy!

WOW!

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Reviewed 20th September 2018 by Angie

What a beauty, this flowered late as I had planted it in a shadier spot but the flower heads are enormous ruffles of pink, coral and purple with a hint of yellow in the centre. I love the way the petals twist bringing a looser, very flamboyant feel. A dahlia which needs a lot of support but rewards you with its beauty.