Repotting guide

When & how to repot Delta Vygie (Lampranthus deltoides)

Also called Delta Vygie, Deltoid-leaved Ice Plant, Dassievy.

More about delta vygie

About Delta Vygie

Lampranthus deltoides · also called Delta Vygie, Deltoid-leaved Ice Plant · houseplant

Delta Vygie is a South African succulent in the Aizoaceae family, recognised by its distinctive three-angled (deltoid), greyish-green leaves and profuse mauve-pink flowers in spring. It forms spreading mats in rocky, arid habitats and performs well in sunny containers and windowsills with minimal water. Pet-safe and low maintenance.

Mature size: 15-25 cm tall, spreading 30-50 cm wide

Watch for — Root rot in wet conditions: Wet soil, especially in cool weather or winter, rapidly causes root and stem rot. Always ensure fast drainage and hold water in winter.

How to tell delta vygie needs repotting

Repotting on a calendar is less reliable than reading the plant. For delta vygie, 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 delta vygie

Every 2–3 years, into bone-dry mix. Delta Vygie's growth habit — spreading, mat-forming succulent perennial — sets the pace. Delta Vygie is a South African succulent in the Aizoaceae family, recognised by its distinctive three-angled (deltoid), greyish-green leaves and profuse mauve-pink flowers in spring. It forms spreading mats in rocky, arid habitats and performs well in sunny containers and windowsills with minimal water. Pet-safe and low maintenance.

What size pot to step delta vygie up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Delta Vygie 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 delta vygie

Spring or summer, while delta vygie 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 delta vygie

Repot dry. Do not water delta vygie 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 draining cactus or succulent compost 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 delta vygie 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 delta vygie 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 delta vygie

Delta Vygie wants sharply draining cactus or succulent compost. A 50:50 blend of cactus compost and coarse grit or perlite provides the fast drainage this species requires. Slightly alkaline to neutral pH (6.5-7.5) is ideal. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting delta vygie — frequently asked questions

How often should you repot delta vygie?

Every 2–3 years, into bone-dry mix for delta vygie. Repot delta vygie every 2–3 years into a snug pot of sharply draining cactus or succulent compost, 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 delta vygie need?

When is the best time of year to repot delta vygie?

Should you water delta vygie after repotting?

No — not straight away. Repot delta vygie 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 delta vygie after repotting?

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