Repotting guide

When & how to repot Thessalian Aubrieta (Aubrieta thessala)

Also called Thessalian aubrieta, Rock cress, False rock cress.

More about thessalian aubrieta

About Thessalian Aubrieta

Aubrieta thessala · also called Thessalian aubrieta, Rock cress · flowering

Aubrieta thessala is a mat-forming evergreen perennial native to rocky limestone habitats in Greece and the Balkans. It thrives in full sun with sharply drained, alkaline to neutral soil and is a classic choice for dry stone walls, rock gardens, and scree beds. The single most important care point is to trim the plant hard immediately after flowering to prevent it becoming leggy and to encourage a compact second flush of growth. Not listed by the ASPCA; considered non-toxic to pets by most horticultural sources, though confirm with a vet if ingestion is suspected.

Mature size: 5–10 cm tall, spreading to 30–50 cm wide.

How to tell thessalian aubrieta needs repotting

Repotting on a calendar is less reliable than reading the plant. For thessalian aubrieta, 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 thessalian aubrieta

Every 2–3 years, into bone-dry mix. Thessalian Aubrieta's growth habit — prostrate, mat-forming evergreen perennial spreading via trailing stems. — sets the pace. Aubrieta thessala is a mat-forming evergreen perennial native to rocky limestone habitats in Greece and the Balkans. It thrives in full sun with sharply drained, alkaline to neutral soil and is a classic choice for dry stone walls, rock gardens, and scree beds. The single most important care point is to trim the plant hard immediately after flowering to prevent it becoming leggy and to encourage a compact second flush of growth. Not listed by the ASPCA; considered non-toxic to pets by most horticultural sources, though confirm with a vet if ingestion is suspected.

What size pot to step thessalian aubrieta up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Thessalian Aubrieta 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 thessalian aubrieta

Spring or summer, while thessalian aubrieta 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 thessalian aubrieta

Repot dry. Do not water thessalian aubrieta 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 gritty, sharply drained, neutral to alkaline 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 thessalian aubrieta 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 thessalian aubrieta 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 thessalian aubrieta

Thessalian Aubrieta wants gritty, sharply drained, neutral to alkaline. Performs best in lime-rich, low-fertility soils such as chalk or sandy loam; rich soils produce lush foliage but fewer flowers. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting thessalian aubrieta — frequently asked questions

How often should you repot thessalian aubrieta?

Every 2–3 years, into bone-dry mix for thessalian aubrieta. Repot thessalian aubrieta every 2–3 years into a snug pot of gritty, sharply drained, neutral to alkaline, 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 thessalian aubrieta need?

When is the best time of year to repot thessalian aubrieta?

Should you water thessalian aubrieta after repotting?

No — not straight away. Repot thessalian aubrieta 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 thessalian aubrieta after repotting?

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