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Salvia 'Indigo Spires' (Salvia 'Indigo Spires')

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Variety or Cultivar
'Indigo Spires' is a vigorous, clump-forming, borderline hardy, woody-based, herbaceous to semi-evergreen perennial with ovate, mid- to dark green leaves and upright spikes of whorled, purple-blue flowers from early summer into autumn.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
1.5 m 1.2 m 1-2 years
4 ft 3 ft 1-2 years

Where to grow

Soil type
  • Loamy
  • Sandy
Soil drainage
  • Moist but well-drained
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Full Sun
Aspect
  • East
  • West
  • South
Exposure
  • Exposed
  • Sheltered

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Additional plant details

Cultivation

Plant in moist but well-drained, humus-rich soil in a sheltered sunny site. Tends to flop under the weight of the flower spikes. Stake or pinch back. Semi-evergreen to evergreen in warm climates. Can be treated as an annual in cold areas.

Suggested uses

Banks and Slopes, Containers/Patio, Coastal, Beds and borders, Mediterranean, Cottage/Informal, City, Wildlife

UK hardiness

H3

USDA zones

Zone 7, Zone 8, Zone 9, Zone 10, Zone 11

Sunset zone

8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Clump-forming

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Fragrance

Foliage is scented

Toxicity

Not toxic

Plant care

Pruning

Deadhead regularly. Cut back after flowering or in late winter to rejuvenate.

Propagation methods

Division, Softwood cuttings, Semi-ripe cuttings, Basal cuttings, Stem tip cuttings

Propagation

Plants are sterile so do not produce viable seed.

Pests

Slugs

Diseases

Generally disease free.

Take softwood cuttings

Divide and replant in spring

Protect in winter with dry mulch (in cold areas)

Bring tender indoors if container grown (in cold areas)

Take basal cuttings

Apply a fertiliser container grown plants regularly

Take semi-ripe cuttings

Plant tender plants after danger of frost has passed (late spring, early summer)

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