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Dianthus barbatus ‘Sweet’

Sweet william

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: Dianthus barbatus 'Sweet'
  • Common name: Sweet william
  • Family: Caryophyllaceae
  • Plant Type: Perennial
Flower colour:

Pink

Foliage colour:

Green

The sweet William is a traditional cottage garden perennial, coming in a range of flower colours and forms. It’s technically a short-lived perennial, but is usually grown as a biennial, with seeds sown in summer for flowering plants the following year.

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Dianthus ‘Sweet’ makes a fantastic cut flower, its strong stems and large flower heads lasting for several weeks in water.

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‘Sweet’ is an extremely fragrant sweet William cultivar. Clusters of sweetly scented flowers in shades of red, white and purple are borne on sturdy stems from June to September. For best results deadhead regularly to prolong flowering.

How to grow Dianthus 'Sweet'

  • Plant size

    45cm height

    30cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Front, middle

  • Sun exposure: Dappled shade, full sun
  • Hardiness: Hardy
  • Soil type: Clay / heavy / moist / 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 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

Dianthus 'Sweet' and wildlife

Dianthus 'Sweet' has no particular known value to wildlife in the UK.

Is Dianthus 'Sweet' poisonous?

Dianthus 'Sweet' can be toxic.

Toxic to:

Toxic to Cats

Toxic to Dogs

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Dianthus 'Sweet'