species
Dianthus barbatus
Sweet william
Scale drawing from this record, beside a 1.7 m figure.
Dianthus barbatus belongs to the family Caryophyllaceae, also known as Sweet william, introduced to the UK. It reaches 60 cm tall and 30 cm across in about 10 years. It grows in full sun, on loam, chalk or sand soil, where the ground is neutral or alkaline and in well drained conditions, and suits average positions. It tolerates coastal exposure. It flowers from June to July. Its RHS hardiness rating is H6 (hardy, very cold winter): −20 to −15°C.
Assembled from the attributes recorded below.
What this plant needs
- Size at maturity
- 60 cm tall × 30 cm across, after about 10 years
- Hardiness
- H6 (RHS)
- Aspect
- Full sun
- Soil
- Loam, Chalk, Sand
- Acidity
- Neutral, Alkaline
- Moisture
- Well drained
- Exposure
- Average
- Coastal
- Tolerates salt wind
- In the UK
- Introduced
When it flowers
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
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