Sweet-William (Dianthus barbatus)

Sweet-William (Dianthus barbatus) is a popular biennial or short-lived perennial known for its fragrant, colorful, cluster-forming flowers in shades of red, pink, white,

Above information is sourced from Wikipedia

Sunlight

Full Sun

Watering

Moderate

Soil

Well-drained

Temperature

Moderate

Habitat

Outdoor

Fertilizer

Moderate

Care Requirements

Light

Full Sun

Prefers at least 6 hours of direct sunlight daily for best flowering.

Watering

Moderate

Keep soil consistently moist but not waterlogged.

Soil

Well-drained

Temperature

Moderate

Prefers temperatures between 15-24°C during the day; cooler at night.

Habitat

Outdoor

Fertilizer

Moderate

Feed during the growing season with a balanced liquid fertilizer.

Plant Overview

Plant Type

Herb

Plant Place Type

Garden, Pot

Plant Environment

Outdoor

Lifespan

Biennial

Plant Height

0.15-0.6 m

Spread

0.15-0.3 m

Growth Rate

Moderate

Dormancy

Semi-Evergreen

Leaf Color

Green

Leaf Type

Opposite

Flower Size

2-3 cm

Optimal Sunlight Lux

64500

Image Gallery

Flowering & Fruiting Cycles

Monthly activity intensity for bloom and fruit across both hemispheres.

Northern hemisphere

Flowering & fruiting calendar

Peak bloom · JunPeak fruit · Jul

FloweringFruiting

Southern hemisphere

Flowering & fruiting calendar

Peak bloom · MayPeak fruit · May

FloweringFruiting

Synonyms

Silene barbata (L.) E.H.L.Krause

Taxonomy

kingdomPlantae
divisionTracheophyta
classMagnoliopsida
orderCaryophyllales
familyCaryophyllaceae
genusDianthus
speciesDianthus barbatus

Toxicity

Toxic for humans

Rating: 0/5

Toxic for pets

Rating: 0/5

Edible

None

Additional Care Tips

Water regularly to keep the soil consistently moist, especially during dry periods. Avoid waterlogging, as this can lead to root rot. Allow the top inch of soil to dry slightly between waterings for optimal health and blooming.

Deadhead spent flowers regularly to encourage continuous blooming and prevent self-seeding if unwanted. At the end of the flowering season, you can cut back plants by about one-third to tidy them up and promote a compact form for the following year.

Sweet-Williams are easily propagated from seeds sown in spring or early autumn, either directly outdoors or in a seed tray. They can also be propagated from basal cuttings taken in late spring or early summer after flowering.

Biennial or short-lived perennial Sweet-Williams are best treated as annuals or biennials and do not typically require repotting. If grown in containers and needing refreshing, repot them in early spring into a slightly larger pot with fresh, well-draining compost.

FAQs

How much sun does Sweet-William need?

Sweet-William thrives in full sun, requiring at least six hours of direct sunlight per day for optimal flowering and plant health.

What kind of soil is best for Sweet-William?

This plant prefers well-drained soil with a neutral to slightly alkaline pH. It can tolerate a range of soil types, but avoid waterlogged conditions.

When should I water Sweet-William?

Water regularly, especially during dry periods, but allow the soil to dry slightly between waterings. Avoid overhead watering to prevent fungal diseases.

How do I deadhead Sweet-William?

Deadheading spent flowers by cutting them back to a leaf joint or side shoot encourages reblooming and prevents the plant from setting seed prematurely.

Can Sweet-William be grown as an annual?

Yes, Sweet-William is often grown as an annual or biennial. While it can perennialize, it often performs best when treated as a short-lived perennial or replanted every few years.

Care Requirements

Light

Full Sun

Prefers at least 6 hours of direct sunlight daily for best flowering.

Watering

Moderate

Keep soil consistently moist but not waterlogged.

Soil

Well-drained

Temperature

Moderate

Prefers temperatures between 15-24°C during the day; cooler at night.

Habitat

Outdoor

Fertilizer

Moderate

Feed during the growing season with a balanced liquid fertilizer.

Additional Care Tips

FAQs