Salvia przewalskii (red sage) — Clump-forming or bushy, upright

Overview

Salvia przewalskii is a clump-forming or bushy, upright perennial in the genus Salvia, part of the Lamiaceae family, with deciduous, semi-evergreen or evergreen; aromatic, often textured or felted foliage. Salvia przewalskii grows best in full sun, and tolerates light loam and sand or chalk soils and neutral to alkaline pH. Its UK hardiness is rated H3–H5 for shrubby kinds, H6–H7 for the hardy herbaceous species. It is native to Tibet to C China.

About

Salvia przewalskii is a clump-forming perennial sage with aromatic, often textured foliage and upright flowering stems. It produces purple‑red to red‑brown flowers from June to September. The foliage can be yellow‑green and ranges from deciduous to semi‑evergreen or evergreen depending on site. It suits sharply drained, neutral to alkaline soils in a sunny, sheltered position.

Wikipedia contributors, CC BY-SA 4.0 — Salvia przewalskii

About the genus

Salvia is the largest genus of plants in the sage family Lamiaceae, with just under 1,000 species of shrubs, herbaceous perennials, and annuals. Within the Lamiaceae, Salvia is part of the tribe Mentheae within the subfamily Nepetoideae. One of several genera commonly referred to as sage, it includes two widely used herbs, Salvia officinalis and Salvia rosmarinus.

Wikipedia contributors, "Salvia", CC BY-SA 4.0 — Salvia

In the garden

Salvia przewalskii is a perennial member of the Lamiaceae native to Tibet and central China. It forms a basal clump of textured, aromatic leaves and sends up upright flowering stems in summer, with blooms appearing from June to September. The flowers are notable for their purple‑red to red‑brown tones and a glandular, persistent calyx in many specimens. Plant it in full sun on light loam, sand or chalk where the soil is sharply drained; winter wet is the usual cause of loss. A south or west facing, sheltered spot reduces winter exposure and helps semi‑evergreen forms retain foliage. The species covers a range of hardiness: shrubby forms fall roughly into H3–H5 (borderline to hardy), while the more hardy herbaceous types sit at H6–H7 (very hardy to fully hardy); it also corresponds broadly to USDA zones 5–10. Use Salvia przewalskii in sunny mixed borders, gravel or chalk gardens where drainage is good and the foliage can be appreciated close to paths or seating. The aromatic leaves release their scent when brushed, making the plant useful for placing where its foliage will be experienced at close range.

Growing conditions

Best soil and position for Salvia

Sunlight: Full sun
Soil type: Light loam, sand or chalk
Soil pH: Neutral to alkaline
Soil moisture: Sharply drained; winter wet is the usual cause of loss
Aspect: South or west facing
Exposure: Sheltered
UK hardiness: H3–H5 for shrubby kinds, H6–H7 for the hardy herbaceous species

Plant details

Salvia przewalskii size, habit and characteristics

Plant type: Perennial
Habit: Clump-forming or bushy, upright
Foliage: Deciduous, semi-evergreen or evergreen; aromatic, often textured or felted
Native to: Tibet to C China
Fragrance: Foliage

Care notes

Pruning and caring for Salvia przewalskii

Cultivation: Drainage matters more than cold — most losses come from sitting wet through winter rather than from low temperature. Give the sunniest, sharpest-draining spot available, delay cutting back until spring so old growth shelters the crown, and take insurance cuttings of anything tender.
Pruning: Leave the top growth intact over winter, then cut back to a low framework of live buds in mid-spring once the frosts have passed. Deadhead through summer to extend flowering.
Propagation: Softwood and semi-ripe cuttings root very easily from spring to late summer, which is the standard insurance against winter losses. Divide hardy herbaceous kinds in spring.
Pest resistance: Aromatic foliage deters most pests; capsid bug and leafhopper occasionally cause spotting.
Disease resistance: Robust in dry conditions. Powdery mildew and root rot appear only where the soil stays wet.

Frequently asked questions

How do I grow Salvia przewalskii?

Drainage matters more than cold — most losses come from sitting wet through winter rather than from low temperature. Give the sunniest, sharpest-draining spot available, delay cutting back until spring so old growth shelters the crown, and take insurance cuttings of anything tender.

Where is the best place to plant Salvia przewalskii?

Salvia przewalskii prefers full sun. It suits sheltered positions.

What soil does Salvia przewalskii need?

Salvia przewalskii grows best in light loam and sand or chalk soil. It prefers neutral to alkaline soil. Aim for soil that stays sharply drained; winter wet is the usual cause of loss.

How do I prune Salvia przewalskii?

Leave the top growth intact over winter, then cut back to a low framework of live buds in mid-spring once the frosts have passed. Deadhead through summer to extend flowering.

Is Salvia przewalskii hardy in the UK?

Salvia przewalskii has an RHS hardiness rating of H3, meaning it is half-hardy, tolerating -5 to 1°C, and may need winter protection in colder areas.

How do I propagate Salvia przewalskii?

Softwood and semi-ripe cuttings root very easily from spring to late summer, which is the standard insurance against winter losses. Divide hardy herbaceous kinds in spring.

More in the Salvia genus

Browse all Salvia →