Forms huge rosettes 20cm across
Fantastic mahogany colour
Easy-care architectural plant for containers
Height Up to 10cm (4in)
Spread Up to 20cm (8in)
greenhouseconservatoryalpine & rockerylow maintenance garden
7 Options From£8.99
Best Value Perennial Collection
2 Options From£19.99 (
3 Options From£8.99 (
Pansy Summertime Mix (Garden Ready)
2 Options From£9.99 (
11 Options From£5.99
Dianthus barbatus 'Rockin' Red'
8 Options From£4.99 (
8 Options From£4.99 (
4 Options From£9.99
2 Options From£19.99
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5 Options From£8.99
Sempervivum SUPERSEMPS® ‘Onyx’ is a super-sized hardy sempervivum forming impressive rosettes up to 8 inches (20cm) across. Resembling a giant cut jewel, ‘Onyx’ features stunning geometrical leaf rosettes in a glowing mahogany-black. In summer, thick stalks arise from the rosettes, carrying starry pink flowers. Sempervivum are drought tolerant, easy and rewarding plants for indoors and out. They come in an array of colours and look superb as a collection, planted into creative containers, gravel or between rock piles.
Height: 10cm-20cm (4in-8in). Spread:10-20cm (4-8in).
Plant height and spread is seasonal therefore we list by pot size rather than a defined plant size. The height and spread of the plant delivered will vary depending on the season, meaning arrival images are an indication only.
1 Jumbo Plug Plant (KF0823)
3 Jumbo Plug Plants (KF1581)
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.
Thompson & Morgan strives to ensure that all its plants are delivered to you in the perfect condition for planting. While the majority of our nursery plants cope well with slight delays in intransit, sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this for some of our smaller plug products and tender bedding and vegetable lines, which do not respond well to the extra journey time. So regretfully while we offer the majority of our live plant offering nationwide, we are unable to ship plugs, begging plants and tender vegetable plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3
Sempervivum SUPERSEMPS® ‘Onyx’
2 Options From£9.99