UK Succulent Varieties

UK Succulent Varieties

The most reliable outdoor, UK-hardy succulent plant types belong to the Sempervivum and Sedum genera, which can easily withstand freezing winter temperatures, snow, and summer droughts.

When growing succulents outdoors in the UK, the biggest threat is not the cold, but waterlogged winter soil. Using an incredibly free-draining compost mix with at least 40% grit or perlite is essential.

Below is a selection of the best succulent types grouped by growth habit:

Low-Growing Rosettes (Mat-Forming)

• Sempervivum (Houseleeks / Hens & Chicks): These are completely winter-frost hardy and form tight, geometric rosettes. Popular varieties like Sempervivum tectorum and Sempervivum calcareum produce offsets ("chicks") that rapidly carpet rockeries. Specialized cultivars like Sempervivum 'Silver Kenovel' offer striking silvery foliage.
• Sempervivum arachnoideum (Cobweb Houseleek): A unique variation featuring pointy rosettes woven over with fine, white silk-like threads. These threads trap morning dew and moisture, helping the plant tolerate extreme cold down to -30°C.
• Jovibarba: Very closely related to Sempervivum and equally cold-hardy. Cultivars like Jovibarba heuffelii 'Angel's Wings' feature crisp, structural rosettes that retain deep green or rich bronze tones throughout the winter.
• Orostachys (Dunce Cap): Fleshy, cone-shaped rosettes that handle sub-zero temperatures well. Orostachys spinosa is a exceptionally tough choice for planting into minimal soil cracks.

Ground Cover & Creeping Carpets 

• Sedum (Stonecrop): Low-growing, trailing evergreen succulents that thrive in poor, rocky soils. Fast-growing varieties such as Sedum acre (Goldmoss) and Sedum dasyphyllum (Corsican Stonecrop) are commonly used for gravel gardens and green roofs.
• Delosperma (Ice Plant): A low-creeping succulent group featuring sausage-shaped, fleshy leaves. Cultivars like Delosperma 'Ice Cream Fuchsia' and Delosperma nubigenum blanket sunny banks and explode into bright, daisy-like blossoms during the summer months. 

Upright, Shrubby & Border Plants

• Hylotelephium (Border Sedums): Unlike creeping varieties, these grow into large, upright clumps that reach up to 60cm tall. Highly popular choices like Hylotelephium 'Herbstfreude' (Sedum Autumn Joy) produce massive, flat-topped flowerheads that emerge pink in late summer and transition to rich bronze-brown by autumn.
• Euphorbia (Hardy Spurges): While not traditional succulents, varieties like Euphorbia characias subsp. wulfenii and Euphorbia myrsinites possess highly fleshy, drought-tolerant glaucous leaves. They add excellent architectural form and bright chartreuse flowerheads to traditional borders. 

Architectural Spiky Accents (Mild Regions or Sheltered Spots)

• Hardy Agave: Striking, structural choices ideal for adding dramatic shapes to a patio. Agave montana (Mountain Agave) can brave the damp UK cold much better than most desert agaves if kept sharply drained.
• Hardy Aloe: Most aloes must remain indoors, but Aloe aristata (Lace Aloe) is remarkably tough. Placed in a sheltered gravel bed or pot, it forms dark green, white-spotted rosettes and sends up tall, coral-orange flower spikes in autumn.
• Crassula sarcocaulis: Commonly known as the Bonsai Crassula, this unique species looks like a miniature succulent tree. It is completely winter hardy but appreciates a spot sheltered from heavy winter downpours