Overview
Delphinium 'Frosted Skies Improved' is a columnar upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with deciduous foliage. Delphinium 'Frosted Skies Improved' grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H5. Suggested uses include cottage and informal garden and wildlife gardens.
About
Delphinium 'Frosted Skies Improved' is a herbaceous perennial cultivar known for its columnar upright habit. As a member of the Delphinium genus, it features the characteristic palmately lobed basal leaves and prominent bowl-shaped flowers arranged in spikes. This deciduous plant thrives in full sun with a sheltered aspect, preferring fertile, well-drained soils of various types and pH levels. Hardy to UK zone H5, it is suited to cottage and informal gardens as well as wildlife-friendly spaces, offering seasonal interest in spring and summer.
Growing conditions
Best soil and position for Delphinium
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- South-facing, East-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Delphinium 'Frosted Skies Improved' size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Columnar upright
- Foliage
- Deciduous
- Suggested uses
- Cottage and informal garden, Wildlife gardens
Care notes
Pruning and caring for Delphinium 'Frosted Skies Improved'
- Propagation
- Propagate by taking pencil thick basal cuttings in early spring or propagate by seed in spring or autumn (cultivars will not come true)
- Pest resistance
- May be susceptible to aphids, earwigs, delphinium leaf miner, delphinium moth caterpillars, slugs, snails and caterpillars
- Disease resistance
- May be susceptible to powdery mildews, delphinium black blotch, crown rot and viruses
Frequently asked questions
Where is the best place to plant Delphinium 'Frosted Skies Improved'?
Delphinium 'Frosted Skies Improved' prefers full sun. It suits sheltered positions.
What soil does Delphinium 'Frosted Skies Improved' need?
Delphinium 'Frosted Skies Improved' is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained to well-drained.
Is Delphinium 'Frosted Skies Improved' hardy in the UK?
Delphinium 'Frosted Skies Improved' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Delphinium 'Frosted Skies Improved'?
Propagate by taking pencil thick basal cuttings in early spring or propagate by seed in spring or autumn (cultivars will not come true).
More in the Delphinium genus
- Delphinium 'Blue Bell'
- Delphinium 'Ailsa'
- Delphinium 'Alison Claire'
- Delphinium 'Ambrose Woods'
- Delphinium 'Angela Rowe'
- Delphinium 'Ann Woodfield'
- Delphinium 'Anne Page'
- Delphinium 'Ariel Blue'