Repotting guide

When & how to repot Trailing Ice Plant (Lampranthus spectabilis)

Also called Trailing ice plant, Shining mesembryanthemum, Ice plant.

More about trailing ice plant

About Trailing Ice Plant

Lampranthus spectabilis · also called Trailing ice plant, Shining mesembryanthemum · flowering

Lampranthus spectabilis is a trailing succulent perennial native to the Western Cape of South Africa, where it grows on dry, rocky hillsides in full sun. It needs sharply drained, lean soil and minimal water once established, producing a dazzling flush of daisy-like flowers in magenta, purple, or pink in late winter through spring. The single most important care fact is that overwatering is the principal cause of failure — the roots will rot in any soil that stays moist. According to the ASPCA, Lampranthus (ice plant) is non-toxic to cats and dogs.

Mature size: 15–30 cm tall, spreading 60–90 cm wide.

Watch for — Root rot: Caused by waterlogged or heavy soil; stems wilt and turn dark at the base — improve drainage immediately and reduce watering frequency.

How to tell trailing ice plant needs repotting

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

Every 2–3 years, into bone-dry mix. Trailing Ice Plant's growth habit — prostrate to sprawling succulent subshrub, rooting at nodes where stems contact soil. — sets the pace. Lampranthus spectabilis is a trailing succulent perennial native to the Western Cape of South Africa, where it grows on dry, rocky hillsides in full sun. It needs sharply drained, lean soil and minimal water once established, producing a dazzling flush of daisy-like flowers in magenta, purple, or pink in late winter through spring. The single most important care fact is that overwatering is the principal cause of failure — the roots will rot in any soil that stays moist. According to the ASPCA, Lampranthus (ice plant) is non-toxic to cats and dogs.

What size pot to step trailing 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. Trailing 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 trailing ice plant

Spring or summer, while trailing 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 trailing ice plant

Repot dry. Do not water trailing 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 sharply drained sandy or gritty 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 trailing 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 trailing 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 trailing ice plant

Trailing Ice Plant wants sharply drained sandy or gritty mix. Use a cactus-and-succulent compost blended 50:50 with coarse horticultural grit or perlite; ordinary potting compost retains too much moisture and promotes root rot. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting trailing ice plant — frequently asked questions

How often should you repot trailing ice plant?

Every 2–3 years, into bone-dry mix for trailing ice plant. Repot trailing ice plant every 2–3 years into a snug pot of sharply drained sandy or gritty 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 trailing ice plant need?

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

Should you water trailing ice plant after repotting?

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

Not immediately. Wait about 3 weeks after repotting trailing 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.