Autumn sage

Sun

Full sun; light afternoon shade is helpful in very hot climates.

Water

Low once established; water regularly during establishment and occasionally during prolonged drought for better flowering.

Soil

Well-drained sandy, gravelly or loamy soil; tolerates limestone and alkaline soils. Avoid waterlogged ground, especially in winter.

Height

2-3 ft (0.6-0.9 m)

Spread

2-3 ft (0.6-0.9 m)

Flowers

Spring to autumn, often strongest in spring and autumn in hot climates. Usually red in wild plants; selections include pink, white, coral and purple shades.

Foliage

Small, opposite, oval green leaves with mostly smooth edges and an aromatic scent when rubbed; evergreen in mild climates, partly or fully deciduous in colder winters.

Growth

Moderate to fast

Care needed

Low

• Water deeply when the root zone dries during the first growing season; reduce watering once established.
• Plant in sharply drained ground or a container with drainage holes; use a raised bed where soil stays wet in winter.
• Feed lightly in spring only if growth is weak; rich feeding encourages soft growth and fewer flowers.
• Keep mulch clear of the woody crown; gravel mulch is useful in dry borders.
• Keep container-grown plants sheltered from severe frost and prolonged winter rain.

Pruning. In spring, once severe frost has passed and new buds are visible, remove dead stems and shorten remaining shoots by about one-third, cutting above live growth. Lightly trim after a main flowering flush to encourage branching, but avoid hard autumn pruning or cutting into bare old wood.

Spring

Prune above visible live buds after severe frost has passed.

Spring

Plant after the soil warms, water thoroughly, and check drainage.

Early summer

Take softwood cuttings from healthy, non-flowering shoots.

Summer

Trim spent flower stems lightly and water during prolonged dry spells if flowering slows.

Early autumn

Enjoy the renewed flowering flush; avoid heavy feeding or hard pruning.

Winter

Keep the crown free of wet debris and shelter pots from severe frost and persistent rain.

• Plant in repeated groups along a sunny path for a loose, long-flowering edge.
• Mix with lavender and ornamental grasses in gravel gardens for contrasting flowers and fine-textured foliage.
• Use in warm-coloured borders with blanket flowers and yarrows for a long summer-to-autumn display.
• Grow in a well-drained patio container where the flowers and scented leaves can be enjoyed close up.

Garden styles it suits: Mediterranean, Desert / xeriscape, Dry gravel garden, Pollinator garden, Southwestern and Texas Hill Country.

Plant it with: English lavender, Yarrow, Blanket flower, Butterfly gaura, Blue grama and Santolina.

Wildlife: Flowers provide nectar for bees and hummingbirds in North America; butterflies also visit. Deer often avoid the aromatic foliage, but browsing is still possible.

• Root and crown rot in wet soil: improve drainage, reduce watering and keep mulch away from the crown; replace badly rotted plants.
• Winter dieback: choose a sheltered site, leave stems intact over winter and wait for new growth before removing damaged wood.
• Spider mites in hot, dry conditions: check for fine webbing and stippled leaves, rinse leaf undersides and use insecticidal soap if needed.
• Sparse, floppy growth or poor flowering: move to a sunnier position, reduce nitrogen feeding and prune lightly in spring.

Not known to be toxic to people, cats, dogs or horses. No part is recognised as poisonous, but species-specific toxicity information is limited; do not treat it as an edible sage or encourage pets to eat it.

• Little-leaf sage (Salvia microphylla)

  Usually has broader, more noticeably toothed leaves; autumn sage generally has smaller, narrower leaves with mostly smooth edges. Flower colour alone is not a reliable distinction.

• Hybrid autumn sage (Salvia × jamensis)

  These hybrids between autumn sage and little-leaf sage have intermediate features and can be difficult to distinguish by appearance; a reliable nursery label is often needed.

The species name greggii honours the American trader and plant collector Josiah Gregg, while autumn sage refers to its strong late-season flowering.

Propagation. Take softwood cuttings in late spring or early summer, or semi-ripe cuttings later in summer. Seed can be sown in spring, but named selections may not come true; use cuttings to preserve their characteristics.

Accepted botanical name

Salvia greggii

In the US and Canada

Native in the lower 48 states.

Native range

Mexico Northeast and Texas.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.