Salvia greggii (autumn sage) — Clump-forming or bushy, upright

Overview

Salvia greggii 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 greggii 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. Suggested uses include borders, rock gardens, containers and pollinator gardens. It is native to Mexico and adjacent USA.

About

Salvia greggii is a perennial Salvia with aromatic, often felted leaves and a clump-forming, upright habit. It bears tubular flowers from June to September. Plant it in full sun on sharply drained light loam, sand or chalk in a south- or west-facing, sheltered spot. Shrubby cultivars are borderline to hardy in UK terms, while herbaceous forms can be very hardy to fully hardy.

Wikipedia contributors, CC BY-SA 4.0 — Salvia greggii

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 greggii is a perennial from Mexico and adjacent parts of the United States, grown for its aromatic foliage and long season of summer flowers. It has a clump-forming, upright habit and textured leaves that can be deciduous, semi-evergreen or evergreen depending on type and winter conditions. Choose a sunny, south- or west-facing site that is sheltered from prevailing winds and has sharply drained soil; winter wet is the usual cause of loss. It prefers light loam, sand or chalk on a neutral to alkaline pH. In UK terms, shrubby kinds sit between borderline and hardy, while the hardier herbaceous species reach very hardy to fully hardy; the USDA range is 5–10. Use Salvia greggii in front of mixed borders, on rock garden banks, in containers or in pollinator-focused beds where its summer flowers provide interest. The aromatic foliage releases scent when rubbed, which suits positions by paths or seating and makes it a practical choice for sunny patios and containers that receive good drainage.

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 greggii size, habit and characteristics

Plant type: Perennial
Habit: Clump-forming or bushy, upright
Foliage: Deciduous, semi-evergreen or evergreen; aromatic, often textured or felted
Suggested uses: Borders, rock gardens, containers, pollinator gardens
Native to: Mexico, adjacent USA
Fragrance: Foliage

Care notes

Pruning and caring for Salvia greggii

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 greggii?

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 greggii?

Salvia greggii prefers full sun. It suits sheltered positions.

What soil does Salvia greggii need?

Salvia greggii 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 greggii?

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 greggii hardy in the UK?

Salvia greggii 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 greggii?

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 →