Repotting guide

When & how to repot Tree Houseleek (Aeonium arboreum)

Also called Tree houseleek, Tree aeonium, Houseleek tree, Irish rose.

More about tree houseleek

About Tree Houseleek

Aeonium arboreum · also called Tree houseleek, Tree aeonium · houseplant

Tree houseleek (Aeonium arboreum) is a branching, frost-tender succulent from the Canary Islands, prized for glossy rosettes on woody stems. Give it bright direct light, gritty fast-draining soil, and water only when the soil dries. It grows in winter and rests in summer. Not ASPCA-listed, so treat as mildly toxic and check with a vet.

Mature size: Up to about 1-1.5 m (3-5 ft) tall and wide outdoors over 5-10 years; usually kept smaller in containers indoors

Watch for — Leggy, stretched growth (etiolation): Pale, elongated stems with widely spaced leaves mean too little light. Move to a sunnier spot; cut and re-root the leggy top to restart a compact plant.

How to tell tree houseleek needs repotting

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

Every 2–3 years, into bone-dry mix. Tree Houseleek's growth habit — branching, shrubby succulent that forms woody stems topped with flat, spoon-shaped leaf rosettes. it is a winter grower, going semi-dormant in summer. monocarpic at the rosette level: an individual rosette dies after it flowers, but the plant lives on through side branches and basal offsets. — sets the pace. Tree houseleek (Aeonium arboreum) is a branching, frost-tender succulent from the Canary Islands, prized for glossy rosettes on woody stems. Give it bright direct light, gritty fast-draining soil, and water only when the soil dries. It grows in winter and rests in summer. Not ASPCA-listed, so treat as mildly toxic and check with a vet.

What size pot to step tree houseleek up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Tree Houseleek 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 tree houseleek

Spring or summer, while tree houseleek 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 tree houseleek

Repot dry. Do not water tree houseleek 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 cactus and 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 tree houseleek 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 tree houseleek 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 tree houseleek

Tree Houseleek wants gritty, fast-draining cactus and succulent mix. Use a loam-based or multi-purpose compost cut heavily with grit, coarse sand or perlite (roughly 60% compost to 40% grit). Sharp drainage is essential. Always plant in a pot with drainage holes; standing water quickly rots the shallow roots. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting tree houseleek — frequently asked questions

How often should you repot tree houseleek?

Every 2–3 years, into bone-dry mix for tree houseleek. Repot tree houseleek every 2–3 years into a snug pot of gritty, fast-draining cactus and 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 tree houseleek need?

When is the best time of year to repot tree houseleek?

Should you water tree houseleek after repotting?

No — not straight away. Repot tree houseleek 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 tree houseleek after repotting?

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