Repotting guide

When & how to repot Ashton's Ice Plant (Delosperma ashtonii)

Also called Ashton Delosperma, Ice Plant.

More about ashton's ice plant

About Ashton's Ice Plant

Delosperma ashtonii · also called Ashton Delosperma, Ice Plant · flowering

Delosperma ashtonii is a South African mat-forming succulent producing vivid magenta-purple flowers over a long summer season. It is among the hardier Delosperma species, suited to rock gardens and sunny borders in frost-tolerant climates. Combines well with other alpine and succulent groundcovers. Not individually ASPCA-listed; treat as mildly toxic as a precaution.

Mature size: 5–10 cm tall; spreads 30–50 cm wide

How to tell ashton's ice plant needs repotting

Repotting on a calendar is less reliable than reading the plant. For ashton's 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 ashton's ice plant

Every 2–3 years, into bone-dry mix. Ashton's Ice Plant's growth habit — low, mat-forming semi-evergreen succulent groundcover — sets the pace. Delosperma ashtonii is a South African mat-forming succulent producing vivid magenta-purple flowers over a long summer season. It is among the hardier Delosperma species, suited to rock gardens and sunny borders in frost-tolerant climates. Combines well with other alpine and succulent groundcovers. Not individually ASPCA-listed; treat as mildly toxic as a precaution.

What size pot to step ashton's 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. Ashton's 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 ashton's ice plant

Spring or summer, while ashton's 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 ashton's ice plant

Repot dry. Do not water ashton's 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 free-draining, lean gritty or sandy 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 ashton's 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 ashton's 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 ashton's ice plant

Ashton's Ice Plant wants free-draining, lean gritty or sandy soil; ph 6.0–7.5. Performs best in lean, well-drained soils that replicate its rocky South African habitat. Rich, moisture-retentive soils cause rot and reduce flowering. Raised beds or rock garden settings are ideal in heavier soils. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting ashton's ice plant — frequently asked questions

How often should you repot ashton's ice plant?

Every 2–3 years, into bone-dry mix for ashton's ice plant. Repot ashton's ice plant every 2–3 years into a snug pot of free-draining, lean gritty or sandy 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 ashton's ice plant need?

When is the best time of year to repot ashton's ice plant?

Should you water ashton's ice plant after repotting?

No — not straight away. Repot ashton's 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 ashton's ice plant after repotting?

Not immediately. Wait about 3 weeks after repotting ashton's 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.