Repotting guide

When & how to repot Summit Sage (Salvia summa)

Also called Summit sage, Supreme sage, Great sage.

More about summit sage

About Summit Sage

Salvia summa · also called Summit sage, Supreme sage · flowering

Salvia summa is a rare, compact herbaceous perennial native to a small area of limestone cliffs in southern New Mexico, adjacent northern Texas, and Chihuahua, Mexico, growing at elevations of 1,520–2,140 m in partial shade. It produces relatively large, pink to pale-lavender flowers spotted with red in the throat on a plant that reaches only about 30 cm tall, flowering in spring (March–April). Because of its specialised cliff habitat and very restricted natural range it is considered a rare plant. The ASPCA lists Salvia as non-toxic to cats and dogs.

Mature size: 25–35 cm tall and 30–45 cm wide

Watch for — Root rot in heavy or wet soil: Its native limestone cliff habitat drains perfectly; any compacted or poorly drained garden soil will cause root rot — raised beds with gritty, alkaline compost are strongly recommended.

How to tell summit sage needs repotting

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

Every 2–3 years, into bone-dry mix. Summit Sage's growth habit — small, compact, clump-forming herbaceous perennial with upright flowering stems bearing whorled racemes of large tubular flowers relative to the plant's modest size. — sets the pace. Salvia summa is a rare, compact herbaceous perennial native to a small area of limestone cliffs in southern New Mexico, adjacent northern Texas, and Chihuahua, Mexico, growing at elevations of 1,520–2,140 m in partial shade. It produces relatively large, pink to pale-lavender flowers spotted with red in the throat on a plant that reaches only about 30 cm tall, flowering in spring (March–April). Because of its specialised cliff habitat and very restricted natural range it is considered a rare plant. The ASPCA lists Salvia as non-toxic to cats and dogs.

What size pot to step summit sage up to

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

Spring or summer, while summit 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 summit sage

Repot dry. Do not water summit 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 calcareous, gritty, well-drained loam, ph 7.0–8.0 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 summit 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 summit 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 summit sage

Summit Sage wants calcareous, gritty, well-drained loam, ph 7.0–8.0. Thrives in alkaline, limestone-based soils; incorporate lime chips or crushed limestone into the planting mix to replicate native conditions and ensure perfect drainage. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting summit sage — frequently asked questions

How often should you repot summit sage?

Every 2–3 years, into bone-dry mix for summit sage. Repot summit sage every 2–3 years into a snug pot of calcareous, gritty, well-drained loam, ph 7.0–8.0, 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 summit sage need?

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

Should you water summit sage after repotting?

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

Not immediately. Wait about 3 weeks after repotting summit 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.