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Sweet William in the GardenTags plant encyclopedia

Dianthus barbatus

 

Sweet William

A clump forming plant with scented flowers in pink, white, purple or red, often with lighter colour eyes and sporting mid-green foliage. Although a short lived perennial, it is usually grown as a biennial.

Contributed by @thomasrat3

 
plant Features
  • Sweet William likes full sun

    Full sun

  • Sweet William likes very little water

    Very little water

  • Sweet William is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Sweet William likes free draining

    Free draining

 
Similar plants are available to buy from 4 store(s) in the UK
 
plant information

Common name

Sweet William

Latin name

Dianthus barbatus

type

Biennial

family

Caryophyllaceae

ph

7.0 - 8.0 Acid - Neutral

  • Light

    Sweet William likes full sun

    Full sun

  • Frost

    Sweet William is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Soil

    Sweet William likes free draining

    Free draining

  • Water

    Sweet William likes very little water

    Very little water

Plant & bloom calendar

  •  
    Best time to plant
  •  
    When the plant will bloom

full grown dimensions

The size of a fully grown Sweet William is 0.25meters x 0.60meters 0.25 M 0.60 M

Dianthus barbatus

A clump forming plant with scented flowers in pink, white, purple or red, often with lighter colour eyes and sporting mid-green foliage. Although a short lived perennial, it is usually grown as a biennial.


Flowering Season

From Mid Summer TO Early Autumn

Dianthus generally bloom from mid-summer, through to early autumn.

 

Planting Outdoors

From Early Spring TO Mid Spring

Plant container grown plants out in full sun in a light, free draining soil.

 

Propagation by seed in spring

From Late Winter TO Late Spring

Sow seed under glass in late winter or early spring at a temperature of 13C. Prick out seedlings and plant in late spring to flower during summer.

 

Propagation by seed in spring

From Mid Spring TO Late Spring

Sow seeds in open ground in mid spring, moving to flowering position in mid autumn where the plants will bloom early the following year.

 

Propagation by seed in autumn

From Early Autumn TO Early Winter

Sow seeds of the species in autumn or early winter in pots in a coldframe

 
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