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* Seed packet image is for illustration purposes only

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ONLY £2.99 with every order!

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Dahlia 'Black Beauty'Dahlia variabilis

Just £2.99

Half-Hardy Annual
What is Half-Hardy Annual?
A plant that completes its entire life cycle (growth, reproduction, death) in one season.
Can be grown outdoors but requires winter protection from frosts and temperatures below 0C.
2 Reviews

Luxurious velvety blooms

Short plants ideal for pots and front of border

The darkest dahlia youll grow!

This seed is included in the 4 for 3 seed offer.
Don’t forget to check out our whole Seed Range HERE!.

1 packet (50 dahlia seeds)4 for the price of 3 on selected seeds £2.99 Despatch: within 3 Days
Description Sowing More Info Delivery Reviews
Dark velvety blooms appear black until the sun settles on them, revealing a deep maroon shimmer. Height 35cm (14in).

Patio, Cottage Gardens, Exotic Garden, Cut Flower Garden

Half-hardy

Full sun

Up to 35cm (13.8in)

Up to 35cm (13.8in)

Easy for all

Easy for all

First introduced by T&M,RHS plants for pollinators

1 packet (50 dahlia seeds) (25802)

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Sowing Months Flowering Months
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.

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.

Delivery

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 £1.95.

Orders which include any other products will incur a delivery charge of £4.95.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.90 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.

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For your complete peace of mind, our Home and Garden products may be returned to us within 30 days of purchase for a refund of the purchase price. Items must be returned unused, at your cost and in mint condition. All items carry a manufacturer's 12 month defects warranty.