Repotting guide

When & how to repot Silver Crown Cotyledon (Cotyledon orbiculata var. oblonga)

Also called Silver Crown Cotyledon, Pig's Ear, Round-leafed Navel-wort.

More about silver crown cotyledon

About Silver Crown Cotyledon

Cotyledon orbiculata var. oblonga · also called Silver Crown Cotyledon, Pig's Ear · houseplant

A striking South African succulent with upright stems bearing thick, oval, silvery-grey leaves edged in red and coated in white farina. Produces pendant, orange-red, bell-shaped flowers in summer. Easy to grow in bright conditions with infrequent watering. Excellent as a bold statement plant in a sunny indoor spot or frost-free garden.

Mature size: 60–90 cm (24–36 in) tall and wide

Watch for — Root rot from overwatering: The most common fatal problem. Wilting despite moist soil, mushy stems at the base, and leaf drop all indicate rot. Remove from wet soil, trim rotted roots, allow to dry for several days, and repot in fresh, dry, gritty mix.

How to tell silver crown cotyledon needs repotting

Repotting on a calendar is less reliable than reading the plant. For silver crown cotyledon, 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 silver crown cotyledon

Every 2–3 years, into bone-dry mix. Silver Crown Cotyledon's growth habit — upright, branching sub-shrub — sets the pace. A striking South African succulent with upright stems bearing thick, oval, silvery-grey leaves edged in red and coated in white farina. Produces pendant, orange-red, bell-shaped flowers in summer. Easy to grow in bright conditions with infrequent watering. Excellent as a bold statement plant in a sunny indoor spot or frost-free garden.

What size pot to step silver crown cotyledon up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Silver Crown Cotyledon 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 silver crown cotyledon

Spring or summer, while silver crown cotyledon 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 silver crown cotyledon

Repot dry. Do not water silver crown cotyledon 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 fast-draining cactus/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 silver crown cotyledon 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 silver crown cotyledon 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 silver crown cotyledon

Silver Crown Cotyledon wants fast-draining cactus/succulent mix. Use a commercial cactus compost amended with 30–40% coarse perlite or pumice. Good drainage is non-negotiable; shallow, wide terracotta pots work well. Avoid peat-heavy, moisture-retentive composts. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting silver crown cotyledon — frequently asked questions

How often should you repot silver crown cotyledon?

Every 2–3 years, into bone-dry mix for silver crown cotyledon. Repot silver crown cotyledon every 2–3 years into a snug pot of fast-draining cactus/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 silver crown cotyledon need?

When is the best time of year to repot silver crown cotyledon?

Should you water silver crown cotyledon after repotting?

No — not straight away. Repot silver crown cotyledon 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 silver crown cotyledon after repotting?

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