Repotting guide

When & how to repot Grey Speedwell (Veronica cinerea)

Also called Grey Speedwell, Gray Speedwell.

More about grey speedwell

About Grey Speedwell

Veronica cinerea · also called Grey Speedwell, Gray Speedwell · flowering

Grey Speedwell is a silvery-leaved, mat-forming alpine perennial from Turkey and the Middle East. Its felt-like grey foliage contrasts beautifully with small violet-blue flowers produced in early summer. It excels in rock gardens and dry walls, demanding full sun and perfect drainage. Extremely drought-tolerant and rabbit-resistant.

Mature size: 5–10 cm tall, 20–40 cm spread

Watch for — Root rot in wet soils: The single most common cause of death. Plant in raised beds or on slopes; mix at least 50% coarse grit into the planting hole to ensure rapid drainage.

How to tell grey speedwell needs repotting

Repotting on a calendar is less reliable than reading the plant. For grey speedwell, 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 grey speedwell

Every 2–3 years, into bone-dry mix. Grey Speedwell's growth habit — compact, mat-forming subshrub — sets the pace. Grey Speedwell is a silvery-leaved, mat-forming alpine perennial from Turkey and the Middle East. Its felt-like grey foliage contrasts beautifully with small violet-blue flowers produced in early summer. It excels in rock gardens and dry walls, demanding full sun and perfect drainage. Extremely drought-tolerant and rabbit-resistant.

What size pot to step grey speedwell up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Grey Speedwell 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 grey speedwell

Spring or summer, while grey speedwell 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 grey speedwell

Repot dry. Do not water grey speedwell 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 very gritty, free-draining alkaline or neutral soil 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 grey speedwell 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 grey speedwell 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 grey speedwell

Grey Speedwell wants very gritty, free-draining alkaline or neutral soil. Best in a lean, mineral mix: 60% coarse grit or horticultural sand blended with loam. pH 6.5–8.0. Fertility should be low — rich soil produces weak, floppy growth. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting grey speedwell — frequently asked questions

How often should you repot grey speedwell?

Every 2–3 years, into bone-dry mix for grey speedwell. Repot grey speedwell every 2–3 years into a snug pot of very gritty, free-draining alkaline or neutral soil, 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 grey speedwell need?

When is the best time of year to repot grey speedwell?

Should you water grey speedwell after repotting?

No — not straight away. Repot grey speedwell 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 grey speedwell after repotting?

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