Repotting guide

When & how to repot Bluish Sage (Salvia cyanescens)

Also called Bluish Sage, Blue Turkish Sage.

More about bluish sage

About Bluish Sage

Salvia cyanescens · also called Bluish Sage, Blue Turkish Sage · flowering

Salvia cyanescens is a low-growing, drought-tolerant herbaceous perennial native to dry hillsides in Turkey and Iran. It forms a compact rosette of large, velvety grey-green to silver-white leaves topped by tall spikes of soft violet-blue flowers in late spring and early summer. Well-drained, limey soil and a hot, sunny position are essential; the plant rots in wet, heavy ground. The Salvia genus is generally considered non-toxic to cats and dogs by the ASPCA.

Mature size: Foliage rosette 20–30 cm (8–12 in) across; flower spikes to 50–60 cm (20–24 in) tall.

How to tell bluish sage needs repotting

Repotting on a calendar is less reliable than reading the plant. For bluish sage, 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 bluish sage

Every 2–3 years, into bone-dry mix. Bluish Sage's growth habit — low-growing, mat-forming herbaceous perennial with a dense basal rosette of velvety foliage; flower spikes rise well above the leaves. — sets the pace. Salvia cyanescens is a low-growing, drought-tolerant herbaceous perennial native to dry hillsides in Turkey and Iran. It forms a compact rosette of large, velvety grey-green to silver-white leaves topped by tall spikes of soft violet-blue flowers in late spring and early summer. Well-drained, limey soil and a hot, sunny position are essential; the plant rots in wet, heavy ground. The Salvia genus is generally considered non-toxic to cats and dogs by the ASPCA.

What size pot to step bluish sage up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Bluish Sage 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 bluish sage

Spring or summer, while bluish sage 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 bluish sage

Repot dry. Do not water bluish sage 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 well-drained, gritty or sandy, preferably 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 bluish sage 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 bluish sage 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 bluish sage

Bluish Sage wants very well-drained, gritty or sandy, preferably alkaline. Naturally grows in dry, gravelly or stony soils; appreciates lime. Improve heavy soils dramatically with grit before planting — this species will not tolerate waterlogging. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting bluish sage — frequently asked questions

How often should you repot bluish sage?

Every 2–3 years, into bone-dry mix for bluish sage. Repot bluish sage every 2–3 years into a snug pot of very well-drained, gritty or sandy, preferably 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 bluish sage need?

When is the best time of year to repot bluish sage?

Should you water bluish sage after repotting?

No — not straight away. Repot bluish sage 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 bluish sage after repotting?

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