Repotting guide

When & how to repot Yellow Ice Plant (Delosperma nubigenum)

Also called Cloud-Living Ice Plant, Lesotho Ice Plant, Hardy Yellow Delosperma.

More about yellow ice plant

About Yellow Ice Plant

Delosperma nubigenum · also called Cloud-Living Ice Plant, Lesotho Ice Plant · flowering

Delosperma nubigenum is a prostrate, mat-forming hardy succulent from Lesotho's highlands, bearing masses of bright yellow flowers in spring and early summer. Among the hardiest Delosperma species, it tolerates severe frost and snow. Its fleshy, bright green leaves turn red in cold weather. Not individually ASPCA-listed; treat as mildly toxic as a precaution.

Mature size: 3–8 cm tall; spreads 20–45 cm wide

Watch for — Winter root rot: Despite its frost hardiness, it is intolerant of wet soil in winter. In heavy clay soils, plant in raised beds or improve drainage with grit.

How to tell yellow ice plant needs repotting

Repotting on a calendar is less reliable than reading the plant. For yellow ice plant, 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 yellow ice plant

Every 2–3 years, into bone-dry mix. Yellow Ice Plant's growth habit — prostrate, mat-forming evergreen groundcover — sets the pace. Delosperma nubigenum is a prostrate, mat-forming hardy succulent from Lesotho's highlands, bearing masses of bright yellow flowers in spring and early summer. Among the hardiest Delosperma species, it tolerates severe frost and snow. Its fleshy, bright green leaves turn red in cold weather. Not individually ASPCA-listed; treat as mildly toxic as a precaution.

What size pot to step yellow ice plant up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Yellow Ice Plant 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 yellow ice plant

Spring or summer, while yellow ice plant 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 yellow ice plant

Repot dry. Do not water yellow ice plant 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 lean, free-draining sandy or gritty soil; ph 6.0–7.5 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 yellow ice plant 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 yellow ice plant 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 yellow ice plant

Yellow Ice Plant wants lean, free-draining sandy or gritty soil; ph 6.0–7.5. Naturally grows in high-altitude rocky grasslands and scree. Thrives in lean, well-drained soils. Rich soils promote leafy growth at the expense of flowers. Raise planting level in heavy soils to improve drainage. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting yellow ice plant — frequently asked questions

How often should you repot yellow ice plant?

Every 2–3 years, into bone-dry mix for yellow ice plant. Repot yellow ice plant every 2–3 years into a snug pot of lean, free-draining sandy or gritty soil; ph 6.0–7.5, 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 yellow ice plant need?

When is the best time of year to repot yellow ice plant?

Should you water yellow ice plant after repotting?

No — not straight away. Repot yellow ice plant 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 yellow ice plant after repotting?

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