Repotting guide

When & how to repot Caralluma hesperidum (Caralluma hesperidum)

Also called Morocco caralluma.

More about caralluma hesperidum

About Caralluma hesperidum

Caralluma hesperidum · also called Morocco caralluma · houseplant

Caralluma hesperidum is a compact Moroccan stapeliad succulent forming low clumps of toothed, four-angled green stems topped by small, star-shaped maroon carrion flowers. A collector's windowsill plant, it thrives on neglect: gritty fast-draining soil, full sun, sparse watering, and a dry, cool winter rest. Overwatering, not drought, is what kills it.

Mature size: Typically 8-15 cm tall, spreading slowly to a clump 15-25 cm across.

Watch for — Root and basal rot: Overwatering, especially in cool weather, turns the stem base mushy and brown. Unpot, cut away rot, re-root firm segments in dry gritty mix.

How to tell caralluma hesperidum needs repotting

Repotting on a calendar is less reliable than reading the plant. For caralluma hesperidum, 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 caralluma hesperidum

Every 2–3 years, into bone-dry mix. Caralluma hesperidum's growth habit — clumping, mat-forming succulent of short erect four-angled stems that branch from the base into a low cushion. — sets the pace. Caralluma hesperidum is a compact Moroccan stapeliad succulent forming low clumps of toothed, four-angled green stems topped by small, star-shaped maroon carrion flowers. A collector's windowsill plant, it thrives on neglect: gritty fast-draining soil, full sun, sparse watering, and a dry, cool winter rest. Overwatering, not drought, is what kills it.

What size pot to step caralluma hesperidum up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Caralluma hesperidum 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 caralluma hesperidum

Spring or summer, while caralluma hesperidum 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 caralluma hesperidum

Repot dry. Do not water caralluma hesperidum 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 mineral-rich 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 caralluma hesperidum 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 caralluma hesperidum 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 caralluma hesperidum

Caralluma hesperidum wants mineral-rich cactus and succulent mix. Blend standard cactus soil with extra pumice, grit or perlite so water runs straight through. Shallow, wide unglazed pots suit the spreading surface 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 caralluma hesperidum — frequently asked questions

How often should you repot caralluma hesperidum?

Every 2–3 years, into bone-dry mix for caralluma hesperidum. Repot caralluma hesperidum every 2–3 years into a snug pot of mineral-rich 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 caralluma hesperidum need?

When is the best time of year to repot caralluma hesperidum?

Should you water caralluma hesperidum after repotting?

No — not straight away. Repot caralluma hesperidum 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 caralluma hesperidum after repotting?

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