Keeping you updated – Thompson & Morgan is operating as usual, working 24/7 to keep the country gardening. We are working closely with nurseries and growers to ensure that millions of plants are not wasted. Our site features many of these offers and we will add more every day, passing on these amazing deals to our customers.

Popular 18 others are looking at this right now

Dianthus barbatus nigrescens 'Sooty'Sweet William

Hardy Perennial

What is Hardy Perennial?
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.

£2.99

80% (5 Reviews)

Choose available pack sizes:

Want to get notified when back in stock?

Loading...

Height Up to 38cm (15in)
Spread Up to 30cm (11.8in)

Hardy Perennial

cottage gardensscented gardenswildlife gardenscut flower garden

Full sun

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
Sowing Months Flowering Months

You May Also Like

Garden Grow Pop-Up Cloche

Garden Grow Pop-Up Cloche

1 Review
More Info

Just£13.99

Seed Sower

12 Reviews
Quick Buy

Just£1.99

New Garden Grow Fibre Grow Pots

Garden Grow Fibre Grow Pots

9 Reviews
Quick Buy

3 Options From£6.99

incredicompost®

332 Reviews
Quick Buy

2 Options From£11.99

Description
Supremely different to other Sweet Williams with 7cm (2½in) fragrant blooms of deepest maroon-chocolate on red stems and mid green foliage which matures to metallic mahogany. Stunning cut flower and border plant. Often grown as a biennial, this short lived perennial is ideal for cottage garden borders, beds and containers. Height: 30-38cm (12-15in).

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

Useful Links:
How to sow flower seeds
Reasons to buy your seeds from Thompson & Morgan


1 packet (30 dianthus seeds) (23879)

Sowing
Sow in May-June outdoors in a moist, well forked and raked seed bed. Sow thinly, 1cm (0.5in) deep in drills spaced 15cm (6in) apart. Keep seed bed well watered in dry weather.They can also be sown indoors in late April-May in a good seed sowing compost just covering the seed with compost. Germination takes 7-14 days at 18-20C (65-70P).

Transplant to a reserve border, when large enough to handle 15cm (6in) apart in rows 30cm (12in) apart. Plant 30cm (12in) apart in the flower border in September.

For April sowings, when large enough to handle transplant the seedlings to boxes, grow cool and well lit. When well grown, gradually acclimatise to outdoor conditions and plant out in a reserve border as described above.

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 £2.99.

Orders which include any other products will incur a delivery charge of £4.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 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.

Reviews

#YourTMGarden

For the chance to be featured, share your plant pictures with us
on Instagram by using the hashtag #YourTMGarden

Join the T&M Gardener's Club

JOIN NOW
RedEye

Join the T&M Gardener's Club