Join Our Gardening Club

Popular 18 others are looking at this right now

Dahlia 'Black Beauty'

Dahlia variabilis

A near jet-black variety!

Dark velvety blooms appear black, enhanced by a vibrant yellow centre

Some parts of this variety are edible - Don't forget to check out our Edible Flowers Guide

This product is produced and supplied in association with Thompson & Morgan

Want to get notified when back in stock?

Loading...
Description Sowing More Info Delivery Reviews
Thompson & Morgan's plant breeders have got their paintbrushes out again, painstakingly hand pollinating flowers in the dahlia glasshouse to create a near jet-black variety! The dark velvety blooms appear black until the sun settles on them, revealing a deep maroon shimmer, further enhanced by a vibrant yellow centre. Set these short and stocky plants at the front of the border for a floral display right though to autumn. Set them in stylish containers for a contemporary floral display on the patio. Height and Spread: 35cm (14").

Culinary note: All dahlia flowers and tubers are edible. The flavours and textures can vary greatly depending on the soil and conditions in which they were grown. Flavours range from water chestnut through to a spicy apple or even carrot. For more details about edible flowers click here.


1 Packet (50 Seeds) (25802)

Sow Dahlia seeds indoors from February to April on the surface of a good, free draining compost and lightly cover with a fine sprinkling of compost or vermiculite. Place the seed tray in a propagator at a temperature of 20-25C (68-77F) or seal inside a clear polythene bag until germination which takes 7 - 21 days. Keep the compost damp but not wet and do not exclude light as this helps germination.


When seedlings are large enough to handle, transplant into 7.5cm (3") pots and grow Dahlia plants on in cooler conditions. When all risk of frost has passed, gradually acclimatise to outdoor conditions over 7 – 10 days before planting outdoors. Plant Dahlias at a distance of 30cm (12") apart on any fertile, well drained soil in full sun.

Feed and water dahlias regularly throughout the growing season. While plants are still young, pinch out the growing tip of each stem to encourage bushier growth and masses of flowers. Deadhead faded dahlia flowers to encourage more blooms to be produced.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

You May Also Like

Gazania splendens 'New Day Mix' F1 Hybrid

34 Reviews
Quick Buy

Just£1.00

Marigold 'Boy O' Boy Yellow'

26 Reviews
Quick Buy

Just£2.69

Nasturtium 'Chameleon'

43 Reviews
Quick Buy

Just£1.00

Antirrhinum majus 'Circus Clowns'

32 Reviews
Quick Buy

Just£1.00

Cosmos bipinnatus 'Psyche White'

22 Reviews
Quick Buy

Just£1.00

Cosmos bipinnatus 'Xanthos'

36 Reviews
Quick Buy

Just£1.00

Cosmos bipinnatus 'Sensation Mixed'

29 Reviews
Quick Buy

2 Options From£2.99

Cosmos sulphureus 'Brightness Mixed'

24 Reviews
Quick Buy

Just£2.99

Lobelia pendula 'Monsoon'

33 Reviews
Quick Buy

Just£1.00

Nasturtium 'Climbing Mixed'

14 Reviews
Quick Buy

Just£2.99

Marigold 'Boy O' Boy Orange'

8 Reviews
Quick Buy

Just£2.79

Cosmos bipinnatus 'Lemonade™'

30 Reviews
Quick Buy

Just£2.49

Sign up to the Van Meuwen Gardener's Club for Special Offers

JOIN NOW