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Dianthus barbatus

Sweet William

Garden

Wishlist

  • Dianthus barbatus | Copyright Greenplantswap 2019

Features

  • BloomsMay to July
  • Height0.15m to 0.8m
  • Spread0.15m to 0.35m
  • Growth HabitBushy oval
  • Flower ColourRed, purple, white, dotted
  • Leaf ColourGrey green

Description

Dianthus barbatus (Sweet William). This species is a slow-growing, frost-hardy perennial which is usually treated as a biennial. It has profusely-packed, fragrant flowerheads which will bear red, pink or white blossoms. The foliage is grey-green and grass-like. You will need to deadhead after blooming to prolong the season.

Characteristics

Perennial or Biennial, Evergreen, Fragrant

Origin

S. Europe, China

Interest and use

Border, fragrance, cutting bed, container, window-box

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  • Dianthus barbatus | Copyright Greenplantswap 2019

Needs

  • LightFull sun
  • HardinessFully hardy (min -15°C)
  • SoilHeavy, Well drained, Light, Medium
  • Soil pH8.0 to 5.5
  • WaterSemi-moist

Cultivation

They are fully to half hardy, and will need an open sunny position with well drained slightly alkaline soil. The tall species of carnations and pinks have a loose habit and will need staking. Dead-heading of repeat-flowering types is beneficial.

Propagation

Propagate perennials by layering or from cuttings in summer; annuals and biennials from seed in autumn or early spring.

Pests, diseases or disorders

Watch for aphids, thrips and caterpillars, rust and virus infections.

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