Repotting guide

When & how to repot Long-stamened Sage (Salvia exserta)

Also called Long-stamened sage, Extended-stamen sage.

More about long-stamened sage

About Long-stamened Sage

Salvia exserta · also called Long-stamened sage, Extended-stamen sage · flowering

Salvia exserta is a rare South African sage named for its conspicuously long, exserted stamens that protrude far beyond the tubular rose-pink to magenta flowers, creating a striking display that attracts long-tongued sunbirds and insects in its native habitat. It is an upright, tender perennial that blooms in summer and autumn, best grown in pots that can be overwintered frost-free. Plant in full sun with very free-draining soil to prevent rot. Salvia is listed by the ASPCA as non-toxic to cats and dogs.

Mature size: 60-90 cm tall and 40-60 cm wide in a container or frost-free border.

How to tell long-stamened sage needs repotting

Repotting on a calendar is less reliable than reading the plant. For long-stamened 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 long-stamened sage

Every 2–3 years, into bone-dry mix. Long-stamened Sage's growth habit — upright, branching subshrub or short-lived tender perennial with wiry stems and whorls of prominent, long-stamened flowers. — sets the pace. Salvia exserta is a rare South African sage named for its conspicuously long, exserted stamens that protrude far beyond the tubular rose-pink to magenta flowers, creating a striking display that attracts long-tongued sunbirds and insects in its native habitat. It is an upright, tender perennial that blooms in summer and autumn, best grown in pots that can be overwintered frost-free. Plant in full sun with very free-draining soil to prevent rot. Salvia is listed by the ASPCA as non-toxic to cats and dogs.

What size pot to step long-stamened sage up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Long-stamened 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 long-stamened sage

Spring or summer, while long-stamened 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 long-stamened sage

Repot dry. Do not water long-stamened 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 gritty, free-draining loam 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 long-stamened 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 long-stamened 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 long-stamened sage

Long-stamened Sage wants gritty, free-draining loam. A mix of two parts loam-based compost to one part coarse perlite or grit suits this South African native perfectly. Fertility should be moderate; overly rich soil encourages leafy growth at the expense of 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 long-stamened sage — frequently asked questions

How often should you repot long-stamened sage?

Every 2–3 years, into bone-dry mix for long-stamened sage. Repot long-stamened sage every 2–3 years into a snug pot of gritty, free-draining loam, 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 long-stamened sage need?

When is the best time of year to repot long-stamened sage?

Should you water long-stamened sage after repotting?

No — not straight away. Repot long-stamened 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 long-stamened sage after repotting?

Not immediately. Wait about 3 weeks after repotting long-stamened 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.