Repotting guide

When & how to repot Sempervivum 'Red Lion' (Sempervivum 'Red Lion')

Also called Red Lion houseleek.

More about sempervivum 'red lion'

About Sempervivum 'Red Lion'

Sempervivum 'Red Lion' · also called Red Lion houseleek · houseplant

Sempervivum 'Red Lion' is a striking hybrid houseleek with bold rosettes that flush deep ruby to wine-red in strong sun and cool seasons, fading to bronze-green in shade or warmth. Cold-hardy and drought-tolerant, it offsets freely into colourful colonies. Grown for its intense red tones, it needs full sun, sharp drainage, and minimal water to perform.

Mature size: Rosettes 8-12 cm across; colonies spread 25-35 cm wide. Flower stalks reach 15-25 cm.

Watch for — Root and crown rot: Overwatering or water-retentive soil rots the plant, the main cause of failure. Use a gritty mix, water only when fully dry, and keep nearly dry in winter.

How to tell sempervivum 'red lion' needs repotting

Repotting on a calendar is less reliable than reading the plant. For sempervivum 'red lion', watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot sempervivum 'red lion'

Every 2–3 years, into bone-dry mix. Sempervivum 'Red Lion''s growth habit — evergreen, mat-forming succulent. rosettes multiply by stoloniferous offsets around a central plant to form spreading colonies. each rosette is monocarpic, blooming once on a stalk before dying and being succeeded by its chicks. — sets the pace. Sempervivum 'Red Lion' is a striking hybrid houseleek with bold rosettes that flush deep ruby to wine-red in strong sun and cool seasons, fading to bronze-green in shade or warmth. Cold-hardy and drought-tolerant, it offsets freely into colourful colonies. Grown for its intense red tones, it needs full sun, sharp drainage, and minimal water to perform.

What size pot to step sempervivum 'red lion' up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Sempervivum 'Red Lion' stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot sempervivum 'red lion'

Spring or summer, while sempervivum 'red lion' is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting sempervivum 'red lion'

Repot dry. Do not water sempervivum 'red lion' for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty gritty, fast-draining succulent/alpine mix ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set sempervivum 'red lion' at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep sempervivum 'red lion' completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for sempervivum 'red lion'

Sempervivum 'Red Lion' wants gritty, fast-draining succulent/alpine mix. Use cactus compost blended about 1:1 with grit, pumice, or perlite for instant drainage. A lean, neutral substrate keeps the plant stressed enough to hold its red colour and prevents waterlogging around the crown. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting sempervivum 'red lion' — frequently asked questions

How often should you repot sempervivum 'red lion'?

Every 2–3 years, into bone-dry mix for sempervivum 'red lion'. Repot sempervivum 'red lion' every 2–3 years into a snug pot of gritty, fast-draining succulent/alpine mix, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does sempervivum 'red lion' need?

When is the best time of year to repot sempervivum 'red lion'?

Should you water sempervivum 'red lion' after repotting?

No — not straight away. Repot sempervivum 'red lion' into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise sempervivum 'red lion' after repotting?

Not immediately. Wait about 3 weeks after repotting sempervivum 'red lion'. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.