Repotting guide

When & how to repot Stapelia leendertziae (Stapelia leendertziae)

Also called black bell stapelia.

More about stapelia leendertziae

About Stapelia leendertziae

Stapelia leendertziae · also called black bell stapelia · houseplant

Stapelia leendertziae, the black bell stapelia, is a striking South African stem succulent unusual among its kin for deep maroon-black, bell-shaped flowers rather than flat stars. Its soft four-angled grey-green stems clump from the base. Like other carrion flowers it lures flies with a faint foul scent, and it grows best with bright light, gritty soil, and a dry winter rest.

Mature size: Stems grow about 15-20 cm (6-8 in) tall, spreading to around 30 cm (12 in); the bell-shaped flowers can be 7-12 cm long.

Watch for — Stem and root rot: Overwatering or cold-damp conditions turn stems soft and dark. Remove affected tissue, let it callus, and re-root healthy segments in dry, very gritty mix.

How to tell stapelia leendertziae needs repotting

Repotting on a calendar is less reliable than reading the plant. For stapelia leendertziae, 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 stapelia leendertziae

Every 2–3 years, into bone-dry mix. Stapelia leendertziae's growth habit — clump-forming succulent with erect, soft, four-angled toothed grey-green stems branching from the base into spreading clumps. — sets the pace. Stapelia leendertziae, the black bell stapelia, is a striking South African stem succulent unusual among its kin for deep maroon-black, bell-shaped flowers rather than flat stars. Its soft four-angled grey-green stems clump from the base. Like other carrion flowers it lures flies with a faint foul scent, and it grows best with bright light, gritty soil, and a dry winter rest.

What size pot to step stapelia leendertziae up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Stapelia leendertziae 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 stapelia leendertziae

Spring or summer, while stapelia leendertziae 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 stapelia leendertziae

Repot dry. Do not water stapelia leendertziae 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 free-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 stapelia leendertziae 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 stapelia leendertziae 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 stapelia leendertziae

Stapelia leendertziae wants free-draining cactus and succulent mix. Use a gritty, fast-draining blend of cactus compost with added perlite, pumice, or coarse sand. A shallow, well-drained pot suits its spreading, shallow roots; avoid heavy, water-retentive soils that hold damp around the base. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting stapelia leendertziae — frequently asked questions

How often should you repot stapelia leendertziae?

Every 2–3 years, into bone-dry mix for stapelia leendertziae. Repot stapelia leendertziae every 2–3 years into a snug pot of free-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 stapelia leendertziae need?

When is the best time of year to repot stapelia leendertziae?

Should you water stapelia leendertziae after repotting?

No — not straight away. Repot stapelia leendertziae 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 stapelia leendertziae after repotting?

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