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Isotoma axillaris 'Blue Star' (Blue star creeper 'Blue Star')

Other names: Laurentia 'Blue Star', Laurentia axillaris 'Blue Star', Rock isotoma 'Blue Star'

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Variety or Cultivar
'Blue Star' is a tender, mound-forming, woody-based, evergreen perennial, often grown as an annual, with small, elliptic, slightly toothed, dark green leaves and fragrant, star-shaped, blue to violet-blue flowers from late spring 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
0.3 m 0.3 m 5-10 years
0 ft 0 ft 5-10 years

Where to grow

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

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Additional plant details

Cultivation

Grow in moderately fertile, moist but well-drained soil in full sun. In frost-prone areas, plant out after last frost. Under glass, grow in loam-based compost in full light. Water moderately & feed monthly; sparingly in winter.

Suggested uses

Ground Cover, Containers/Patio, Beds and borders, Cottage/Informal, Edging, Garden edging, Greenhouse, Between paving stones, Lawn

UK hardiness

H3

USDA zones

Zone 9, Zone 10

Sunset zone

4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

WUCOLS

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

Foliage

Evergreen

Habit

Cushion or Mound Forming

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Toxicity

Contact with sap may irritate skin.

Plant care

Pruning

Pinch out growing tips to maintain compact, bushy habit. Deadhead regularly to prolong flowering.

Propagation methods

Seed, Softwood cuttings

Pests

Aphids

Diseases

Take softwood cuttings

Deadhead regularly (optional)

Bring tender indoors if container grown (in cold areas)

Apply a fertiliser container grown plants regularly

Sow seed in containers with heat (spring)

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

Other plants

Plants in this Genus (0)

Isotoma

Companion plants (0)

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