Repotting guide

When & how to repot Glaucous Lampranthus (Lampranthus glaucus)

Also called Glaucous Lampranthus, Noon Flower, Yellow Ice Plant.

More about glaucous lampranthus

About Glaucous Lampranthus

Lampranthus glaucus · also called Glaucous Lampranthus, Noon Flower · flowering

A compact, rounded South African succulent shrub producing masses of vivid orange to yellow daisy-like flowers from late summer into autumn. Known as a 'noon flower' because blooms open only in full sun. Glaucous blue-green succulent foliage is attractive year-round. Excellent for coastal gardens, rockeries, and sunny dry banks.

Mature size: 10–30 cm tall; 40–60 cm wide

Watch for — Waterlogging and root rot: Clay or compacted soil causes root rot rapidly. Ensure planting in sharply drained, sandy substrate. Raised rockery positions or sloped banks are ideal. Avoid planting in low spots where water collects after rain.

How to tell glaucous lampranthus needs repotting

Repotting on a calendar is less reliable than reading the plant. For glaucous lampranthus, 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 glaucous lampranthus

Every 2–3 years, into bone-dry mix. Glaucous Lampranthus's growth habit — compact, rounded, spreading subshrub — sets the pace. A compact, rounded South African succulent shrub producing masses of vivid orange to yellow daisy-like flowers from late summer into autumn. Known as a 'noon flower' because blooms open only in full sun. Glaucous blue-green succulent foliage is attractive year-round. Excellent for coastal gardens, rockeries, and sunny dry banks.

What size pot to step glaucous lampranthus up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Glaucous Lampranthus 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 glaucous lampranthus

Spring or summer, while glaucous lampranthus 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 glaucous lampranthus

Repot dry. Do not water glaucous lampranthus 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 sandy, well-drained soil; tolerates poor coastal soils 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 glaucous lampranthus 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 glaucous lampranthus 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 glaucous lampranthus

Glaucous Lampranthus wants sandy, well-drained soil; tolerates poor coastal soils. Grows best in sandy or gritty, free-draining soils. Notably poor in clay soils and should not be planted in areas prone to waterlogging. Tolerates salt exposure and coastal conditions well, making it useful for seaside plantings. No soil enrichment is needed or beneficial. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting glaucous lampranthus — frequently asked questions

How often should you repot glaucous lampranthus?

Every 2–3 years, into bone-dry mix for glaucous lampranthus. Repot glaucous lampranthus every 2–3 years into a snug pot of sandy, well-drained soil; tolerates poor coastal soils, 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 glaucous lampranthus need?

When is the best time of year to repot glaucous lampranthus?

Should you water glaucous lampranthus after repotting?

No — not straight away. Repot glaucous lampranthus 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 glaucous lampranthus after repotting?

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