Salvia patens 'Blue Angel'

RHS Plant Profile

gentian sage 'Blue Angel'

Herbaceous Perennial

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A bushy, upright, tender perennial with mid-green aromatic arrowhead shaped leaves. From mid-summer to autumn, large azure-blue flowers bloom in succession on thin stems above the foliage. Requires winter protection.

Position

Full sun

Soil Types

Sand, Loam, Clay, Chalk

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1–2 years
Max Spread: 0.1-0.5 metres
Max Height: 0.5-1 metres

Growing Conditions

Sand Loam Clay Chalk

Moisture: Well–drained or Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing
Exposure: 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): H3

Colour & Scent

Fragrance Foliage

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Lamiaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy, Clump forming
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: Accepted

How to Grow

Cultivation

Grow in free draining moderately fertile soil in full-sun. Prefers a sheltered position. Provide winter protection. See our video How to care for tender salvia for more advice

Propagation

Propagate by basal softwood cuttings in spring. Softwood and semi-ripe cuttings can be taken in mid-to late summer.

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Coastal
Mediterranean climate plants
Patio and container plants
Wildlife gardens
Bedding
Flower borders and beds
Conservatory and greenhouse

Pruning

Cut back spent flower spikes to prolong flowering

Pests

Maybe susceptible to leafhopper, slugs and snails.

Diseases

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