Repotting guide

When & how to repot Sempervivum 'Commander Hay' (Sempervivum 'Commander Hay')

Also called Commander Hay houseleek.

More about sempervivum 'commander hay'

About Sempervivum 'Commander Hay'

Sempervivum 'Commander Hay' · also called Commander Hay houseleek · houseplant

Sempervivum 'Commander Hay' is a large, classic hybrid houseleek with broad, flattened rosettes in rich red-bronze tones edged with green tips. One of the bigger Sempervivums, it makes a bold statement and offsets generously into wide colonies. Cold-hardy and drought-tolerant, it asks only for full sun, gritty soil, and restrained watering.

Mature size: Rosettes 10-15 cm across (notably large); colonies spread 30-40 cm wide. Flower stalks reach 20-30 cm.

Watch for — Crown and root rot: The chief killer, from overwatering or heavy soil. Plant in a gritty, fast-draining mix, water only when fully dry, and keep nearly dry through winter.

How to tell sempervivum 'commander hay' needs repotting

Repotting on a calendar is less reliable than reading the plant. For sempervivum 'commander hay', 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 'commander hay'

Every 2–3 years, into bone-dry mix. Sempervivum 'Commander Hay''s growth habit — evergreen, mat-forming succulent and one of the larger houseleeks. big rosettes spread by stoloniferous offsets into wide colonies. each rosette is monocarpic, flowering once on a tall stalk before dying and being replaced by its chicks. — sets the pace. Sempervivum 'Commander Hay' is a large, classic hybrid houseleek with broad, flattened rosettes in rich red-bronze tones edged with green tips. One of the bigger Sempervivums, it makes a bold statement and offsets generously into wide colonies. Cold-hardy and drought-tolerant, it asks only for full sun, gritty soil, and restrained watering.

What size pot to step sempervivum 'commander hay' up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Sempervivum 'Commander Hay' 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 'commander hay'

Spring or summer, while sempervivum 'commander hay' 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 'commander hay'

Repot dry. Do not water sempervivum 'commander hay' 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 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 'commander hay' 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 'commander hay' 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 'commander hay'

Sempervivum 'Commander Hay' wants gritty, fast-draining succulent mix. Plant in cactus/succulent compost cut about 1:1 with grit, pumice, or perlite. A lean, neutral, sharply draining substrate prevents the crown from sitting wet and keeps this larger cultivar firm and healthy. 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 'commander hay' — frequently asked questions

How often should you repot sempervivum 'commander hay'?

Every 2–3 years, into bone-dry mix for sempervivum 'commander hay'. Repot sempervivum 'commander hay' every 2–3 years into a snug pot of gritty, fast-draining succulent 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 'commander hay' need?

When is the best time of year to repot sempervivum 'commander hay'?

Should you water sempervivum 'commander hay' after repotting?

No — not straight away. Repot sempervivum 'commander hay' 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 'commander hay' after repotting?

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