Repotting guide

When & how to repot Houseleek Cliff Stonecrop (Prometheum sempervivoides)

Also called Houseleek Cliff Stonecrop, Rosularia sempervivoides.

More about houseleek cliff stonecrop

About Houseleek Cliff Stonecrop

Prometheum sempervivoides · also called Houseleek Cliff Stonecrop, Rosularia sempervivoides · houseplant

A tough alpine succulent native to rocky stony slopes from Turkey through the Caucasus, Armenia, and northern Iran at altitudes up to 2,900 m. Its tight flat rosettes of pointed, finely hairy leaves closely resemble houseleeks (Sempervivum). Fiery red flowers appear on short stems in summer. Extremely cold hardy; ideal for rock gardens, troughs, or alpine collections.

Mature size: Individual rosettes 3–5 cm (1–2 in) across; spreading clumps 20–40 cm (8–16 in) wide over time

Watch for — Loss of compact form in shade: Shade causes the rosettes to become loose and etiolated, losing their houseleek-like symmetry. Relocate to full sun; compact growth resumes in the next season.

How to tell houseleek cliff stonecrop needs repotting

Repotting on a calendar is less reliable than reading the plant. For houseleek cliff stonecrop, 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 houseleek cliff stonecrop

Every 2–3 years, into bone-dry mix. Houseleek Cliff Stonecrop's growth habit — mat-forming alpine succulent producing tight flat rosettes that offset freely to create a dense ground-hugging cushion — sets the pace. A tough alpine succulent native to rocky stony slopes from Turkey through the Caucasus, Armenia, and northern Iran at altitudes up to 2,900 m. Its tight flat rosettes of pointed, finely hairy leaves closely resemble houseleeks (Sempervivum). Fiery red flowers appear on short stems in summer. Extremely cold hardy; ideal for rock gardens, troughs, or alpine collections.

What size pot to step houseleek cliff stonecrop up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Houseleek Cliff Stonecrop 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 houseleek cliff stonecrop

Spring or summer, while houseleek cliff stonecrop 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 houseleek cliff stonecrop

Repot dry. Do not water houseleek cliff stonecrop 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 sharply draining gritty 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 houseleek cliff stonecrop 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 houseleek cliff stonecrop 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 houseleek cliff stonecrop

Houseleek Cliff Stonecrop wants sharply draining gritty alpine mix. Use at least 50% coarse grit, pumice, or perlite blended with loam. Recreating the stony scree of its natural habitat is key. Raised beds, stone troughs, or containers with multiple drainage holes are ideal. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting houseleek cliff stonecrop — frequently asked questions

How often should you repot houseleek cliff stonecrop?

Every 2–3 years, into bone-dry mix for houseleek cliff stonecrop. Repot houseleek cliff stonecrop every 2–3 years into a snug pot of sharply draining gritty 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 houseleek cliff stonecrop need?

When is the best time of year to repot houseleek cliff stonecrop?

Should you water houseleek cliff stonecrop after repotting?

No — not straight away. Repot houseleek cliff stonecrop 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 houseleek cliff stonecrop after repotting?

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