Alcea 'O Hara'

Alcea ‘O Hara’

Hollyhock

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 not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Alcea 'O Hara'
  • Common name: Hollyhock
  • Family: Malvaceae
  • Plant Type: Perennial, Deciduous
Flower colour:

Red

Foliage colour:

Green

The hollyhock, Alcea, is a classic English cottage garden plant, forming tall erect racemes of large, fully open blooms from summer to early autumn. Hollyhocks are typically perennial, but they’re often grown as biennials due to their susceptibility to the fungal disease rust, which can disfigure leaves. 

Advertisement

Alcea ‘O Hara’ is a double-flowered hollyhock cultivar, bearing masses of fully double, bright scarlet blooms, on tall stems. It’s perfect for a mixed herbaceous border and makes an excellent cut flower. For best results grow in moist but well-drained soil in full sun to partial shade. Flowers may be spoiled by wind and rain, so choose a sheltered spot if possible. Cut down Alcea ‘O Hara’ after flowering, to encourage fresh basal growth.

How to grow Alcea 'O Hara'

  • Plant size

    80cm height

    50cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Middle, back

  • Sun exposure: Full sun, dappled shade
  • Hardiness: Hardy
  • Soil type: Well drained / light / sandy / clay / heavy / moist / chalky / alkaline / acidic

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 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 not flower in October

Plant does not flower in November

Plant does not flower in December

Divide
Divide

Do not Divide in January

Do not Divide in February

Do not Divide in March

Do not Divide in April

Do not Divide in May

Do not Divide in June

Do not Divide in July

Do not Divide in August

Do Divide in September

Do Divide in October

Do not Divide in November

Do not Divide in December

Alcea 'O Hara' and wildlife

Alcea 'O Hara' has no particular known value to wildlife in the UK.

Is Alcea 'O Hara' poisonous?

Alcea 'O Hara' 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

Plants that go well with Alcea 'O Hara'