Overview
Dianthus 'Joan Randal' (pf) is a bushy herbaceous perennial in the genus Dianthus, part of the Caryophyllaceae family, with evergreen foliage. Dianthus 'Joan Randal' (pf) grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H6. Suggested uses include gravel garden, city and courtyard gardens, coastal, cottage and informal garden, patio and container plants, rock garden, low maintenance, wall side borders, banks and slopes, cut flowers, flower borders and beds and underplanting of roses and shrubs.
About
Dianthus 'Joan Randal' is a bushy, evergreen perennial cultivar within the Dianthus genus, known for its slender foliage and aromatic flowers. It thrives in full sun and well-drained soils ranging from chalk to loam and sand, tolerating a variety of pH levels from acid to alkaline. Hardy to UK zone H6, it suits a range of garden settings including gravel, coastal, cottage, and rock gardens, as well as patios and containers. Flowering in spring and summer, it is suitable for use in borders, slopes, and as cut flowers, and can be propagated by softwood cuttings or layering.
Growing conditions
Best soil and position for Dianthus
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
Dianthus 'Joan Randal' (pf) size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Bushy
- Foliage
- Evergreen
- Suggested uses
- Gravel garden, City and courtyard gardens, Coastal, Cottage and informal garden, Patio and container plants, Rock garden, Low Maintenance, Wall side borders, Banks and slopes, Cut flowers, Flower borders and beds, Underplanting of roses and shrubs
Care notes
Pruning and caring for Dianthus 'Joan Randal' (pf)
- Propagation
- Softwood cuttings of non-flowering shoots in summer,Layering after flowering
- Pest resistance
- Slugs,Aphids
- Disease resistance
- Powdery mildews,Rust,Fusarium wilt
Frequently asked questions
Where is the best place to plant Dianthus 'Joan Randal' (pf)?
Dianthus 'Joan Randal' (pf) prefers full sun. It suits exposed and sheltered positions.
What soil does Dianthus 'Joan Randal' (pf) need?
Dianthus 'Joan Randal' (pf) is adaptable and grows happily in most soil types, including chalk, loam and sand. It is happy in soil of any pH. Aim for soil that stays well-drained.
Is Dianthus 'Joan Randal' (pf) hardy in the UK?
Dianthus 'Joan Randal' (pf) has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Dianthus 'Joan Randal' (pf)?
Softwood cuttings of non-flowering shoots in summer,Layering after flowering.
More in the Dianthus genus
- Dianthus 'Activa' (pf)
- Dianthus 'Alanya' (pf)
- Dianthus 'Aldridge Yellow' (b)
- Dianthus 'Alice Forbes Improved' (b)
- Dianthus 'Allen's Maria' (p)
- Dianthus 'Alpine Purple' (pt)
- Dianthus 'Amazon Neon Duo' (Amazon Series)
- Dianthus 'Anders Pretty Penny' (p)