57284

Isotoma axillaris ‘Blue Star’

Rock isotome

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Isotoma axillaris 'Blue Star'
  • Common name: Rock isotome
  • Family: Campanulaceae
  • Plant Type: Annual
Flower colour:

Blue

Foliage colour:

Green

A terrific plant with multibranched stems, Isotoma ‘Blue Star’ forms a great mound of lilac-coloured, star-like flowers. It’s best shown off in a tall, narrow, chimney-pot type container, lifting the mass of growth off the ground where it balloons out. This can be used to fill border gaps in summer, adding height, or planted at strategic points on a terrace.

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Grow Isotoma ‘Blue Star’ in loam-based compost or moist but well-drained soil. Pinch out the young growth to make it even bushier, and give it a fortnightly liquid feed in summer. Deadhead spent blooms to prolong flowering.

How to grow Isotoma 'Blue Star'

  • Plant size

    30cm height

    30cm spread

  • Aspect

    South facing, west facing

  • Sun exposure: Full sun
  • Hardiness: Half hardy
  • Soil type: Well drained / light / sandy

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sow
Sow

Do not Sow in January

Do not Sow in February

Do Sow in March

Do not Sow in April

Do not Sow in May

Do not Sow in June

Do not Sow in July

Do not Sow in August

Do not Sow in September

Do not Sow in October

Do not Sow in November

Do not Sow in December

Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does flower in October

Plant does not flower in November

Plant does not flower in December

Isotoma 'Blue Star' and wildlife

Isotoma 'Blue Star' has no particular known value to wildlife in the UK.

Is Isotoma 'Blue Star' poisonous?

Isotoma 'Blue Star' has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People