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Herbaceous Perennial

Salvia interrupta

Atlas mountain sage

A clump-forming herbaceous perennial with bright green, three lobed soft, hairy, fragrant leaves. Blue to mauve flowers with a white throat appear in pairs or sometimes whorls on tall green-grey stems above the foliage from spring through to summer, sometimes flowering on into the autumn if dead-headed. Drought-tolerant once established

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Ultimate height

1–1.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Sheltered

Drought resistance

Yes

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Lamiaceae
Native to GB / Ireland: No
Foliage: Semi evergreen
Habit: Clump forming, Bushy
Genus: Salvia can be annuals, biennials, herbaceous or evergreen perennials, or shrubs. They have paired, simple or pinnately lobed, often aromatic leaves and 2-lipped flowers in whorls, forming simple or branched spikes or racemes
Name status: Correct
Plant range: Morocco

How to grow

Cultivation

Grow in moderately fertile, moist but well-drained soil in full sun, although this variety will tolerate a little shade

Propagation

Propagate by softwood cuttings in spring or semi-hardwood cuttings in late summer

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Wildlife gardens
Coastal
Flower borders and beds
Wall side borders
Conservatory and greenhouse

Pruning

Cut back spent flower spikes to prolong flowering

Pests

May be susceptible to slugs, snails and glasshouse leafhopper

Diseases

May be susceptible to honey fungus (rarely), powdery mildews, verticillium wilt and foot and root rots

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