Repotting guide

When & how to repot Duvalia corderoyi (Duvalia corderoyi)

Also called Corderoy's duvalia.

More about duvalia corderoyi

About Duvalia corderoyi

Duvalia corderoyi · also called Corderoy's duvalia · houseplant

Duvalia corderoyi is a small clumping stapeliad from southern Africa forming low cushions of squat, toothed, grey-green stems. Its star-shaped maroon-brown carrion flowers have a finely hairy, glistening centre. A collector's curiosity grown indoors, it demands gritty soil, bright light, warmth, and a dry winter rest to prevent the rot it is prone to.

Mature size: Stems around 2-4 cm tall; clumps spreading to roughly 10-15 cm across.

Watch for — Mealybugs and root mealybugs: Cottony white pests lodge among the dense stems and on the roots. Spot-treat with alcohol or a systemic product and check the root ball when repotting.

How to tell duvalia corderoyi needs repotting

Repotting on a calendar is less reliable than reading the plant. For duvalia corderoyi, 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 duvalia corderoyi

Every 2–3 years, into bone-dry mix. Duvalia corderoyi's growth habit — low cushion-forming clustering succulent that builds dense mounds of short, toothed, prostrate stems. — sets the pace. Duvalia corderoyi is a small clumping stapeliad from southern Africa forming low cushions of squat, toothed, grey-green stems. Its star-shaped maroon-brown carrion flowers have a finely hairy, glistening centre. A collector's curiosity grown indoors, it demands gritty soil, bright light, warmth, and a dry winter rest to prevent the rot it is prone to.

What size pot to step duvalia corderoyi up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Duvalia corderoyi 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 duvalia corderoyi

Spring or summer, while duvalia corderoyi 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 duvalia corderoyi

Repot dry. Do not water duvalia corderoyi 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 duvalia corderoyi 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 duvalia corderoyi 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 duvalia corderoyi

Duvalia corderoyi wants gritty, fast-draining cactus and succulent mix. Use cactus compost cut with 40-50% pumice, perlite, or coarse grit. The fleshy stems and shallow roots rot in heavy, moisture-holding soil, so a porous, open, free-draining medium is essential. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting duvalia corderoyi — frequently asked questions

How often should you repot duvalia corderoyi?

Every 2–3 years, into bone-dry mix for duvalia corderoyi. Repot duvalia corderoyi 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 duvalia corderoyi need?

When is the best time of year to repot duvalia corderoyi?

Should you water duvalia corderoyi after repotting?

No — not straight away. Repot duvalia corderoyi 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 duvalia corderoyi after repotting?

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