Border sedums are generally considered to be those that are part of the Hylotelephium genus.
They’re all short, rather succulent, sun-loving hardy perennials with fleshy, blue-grey foliage (some of the best varieties have almost purple foliage).
The flat-topped flower clusters tend to open in late summer and autumn, and often change colour from bud to bloom to dried head. They’re among the most attractive flowers to butterflies. What’s more, the dead flower heads are worth keeping on the plants – covered in frosts they look spectacular. You can snip them and display them for months in a vase, too.
More on garden borders:
- Eight essential border daisies
- Plants for an east-facing border
- How to plant up a dry shady border (video)
Discover some of the best border sedums to grow.
Hylotelephium cauticola ‘Lidakense’
Red-edged, grey-green foliage sets off the small starry pink flowers. In flower from August to September.
Height x spread: 15cm x 30cm.
Hylotelephium erythrostictum ‘Frosty Morn’
Dramatic white-edged leaves, topped with bi-coloured pink and white flowers. Blooms from August to September.
H x S: 40cm x 40cm.
Hylotelephium ‘Bertram Anderson’
Covered in purple-flushed, grey-green leaves and rounded heads of purple-pink flowers. Flowers from August to October.
H x S: 15cm x 30cm.
Hylotelephium telephium ‘Karlfunkelstein’
Young smoky, red-tinted foliage and broad, dark-eyed reddish pink flowers. Flowers in August and September.
H x S: 30cm x 50cm.
Hylotelephium telelephium ‘Purple Emperor’
Reddish stems and dark purple leaves. Clusters of pale pink flowers, mature to reddy brown. Flowers August to October.
H x S: 45cm x 45cm.
Border sedum care
- Happiest in free-draining soil in full sun
- Poor soil is best. Don’t over prepare or over feed as the resulting plants will tend to be soft, weak and floppy
- In rich soil, cut back taller types by half in late May to encourage shorter, better branched and more self supporting growth, although flowering will be slightly delayed
- All are hardy across the whole of the UK