Repotting guide

When & how to repot Gold Dust Alyssum (Aurinia saxatilis)

Also called Gold dust alyssum, Basket of gold, Yellow alyssum, Golden tuft.

More about gold dust alyssum

About Gold Dust Alyssum

Aurinia saxatilis · also called Gold dust alyssum, Basket of gold · flowering

Aurinia saxatilis is a mat-forming hardy perennial native to rocky limestone slopes and cliffs across central and southern Europe, producing dense clusters of vivid golden-yellow flowers in mid to late spring. It thrives in lean, sharply drained alkaline soil in full sun, tolerating drought and poor fertility far better than rich, moist conditions. The most critical care point is that this plant will quickly rot in heavy, moisture-retentive soil — good drainage is non-negotiable. It is not listed as toxic to cats or dogs by the ASPCA.

Mature size: 20–30 cm tall, spreading 30–60 cm wide.

How to tell gold dust alyssum needs repotting

Repotting on a calendar is less reliable than reading the plant. For gold dust alyssum, 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 gold dust alyssum

Every 2–3 years, into bone-dry mix. Gold Dust Alyssum's growth habit — low, mound-forming, semi-evergreen perennial with grey-green, hairy foliage forming a dense cushion above which flower stems arise in spring. — sets the pace. Aurinia saxatilis is a mat-forming hardy perennial native to rocky limestone slopes and cliffs across central and southern Europe, producing dense clusters of vivid golden-yellow flowers in mid to late spring. It thrives in lean, sharply drained alkaline soil in full sun, tolerating drought and poor fertility far better than rich, moist conditions. The most critical care point is that this plant will quickly rot in heavy, moisture-retentive soil — good drainage is non-negotiable. It is not listed as toxic to cats or dogs by the ASPCA.

What size pot to step gold dust alyssum up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Gold Dust Alyssum 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 gold dust alyssum

Spring or summer, while gold dust alyssum 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 gold dust alyssum

Repot dry. Do not water gold dust alyssum 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, sharply drained alkaline to neutral soil or gritty 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 gold dust alyssum 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 gold dust alyssum 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 gold dust alyssum

Gold Dust Alyssum wants lean, sharply drained alkaline to neutral soil or gritty compost. Thrives in chalk, limestone, scree, or well-grit-amended beds; rich or moisture-retentive soils cause excessive leafy growth, weak stems, and crown 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 gold dust alyssum — frequently asked questions

How often should you repot gold dust alyssum?

Every 2–3 years, into bone-dry mix for gold dust alyssum. Repot gold dust alyssum every 2–3 years into a snug pot of lean, sharply drained alkaline to neutral soil or gritty 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 gold dust alyssum need?

When is the best time of year to repot gold dust alyssum?

Should you water gold dust alyssum after repotting?

No — not straight away. Repot gold dust alyssum 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 gold dust alyssum after repotting?

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