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Herbaceous Perennial

Salvia × sylvestris Blue Marvel ('Balsalarv'^PBR)

wood sage [Blue Marvel]

A compact, bushy perennial with aromatic mid-green foliage. Erect flower stems of bright blue flowers appear from summer through to the autumn

Synonyms

Salvia × sylvestris 'Balsalarv'^PBR
Salvia nemorosa 'Blue Marvel'

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or West–facing

Exposure

Exposed or Sheltered

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: Deciduous
Habit: 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: Trade

How to grow

Cultivation

Grow in fertile,humus-rich moist but well drained soil in full sun or light dappled shade

Propagation

Propagate by basal or softwood cuttings in early spring or mid summer. Semi-ripe cuttings in late summer or early autumn. Rooted cuttings will need winter protection in cold frame or cold greenhouse. Only propagate for own use as this plant has a PBR

Suggested planting locations and garden types

Cottage and informal garden
City and courtyard gardens
Patio and container plants
Wildlife gardens
Flower borders and beds

Pruning

Cut back in spring when new growth appears. Dead-head faded flowerspikes regulary to prolong flowering

Pests

Maybe be susceptible to leafhoppers, slugs and snails

Diseases

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

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