Overview
Delphinium 'Blue Mirror' is a clump-forming, upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with divided green leaves foliage. Delphinium 'Blue Mirror' grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include beds, borders and cut flowers.
About
Delphinium 'Blue Mirror' is a herbaceous perennial cultivar of the Delphinium genus, known for its clump-forming, upright habit and divided green leaves. Like other Delphiniums, it features prominent bowl-shaped flowers arranged in spikes, making it a striking addition to beds and borders. It thrives in fertile, moist but well-drained loam soil with a neutral pH, requiring full sun and a sheltered position, ideally south, west, or east-facing. Hardy to UK zone H5, it is best grown with staking for support and benefits from mulching in spring. Propagation is by basal cuttings in early spring.
Growing conditions
Best soil and position for Delphinium
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Delphinium 'Blue Mirror' size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump-forming, upright
- Foliage
- Divided green leaves
- Suggested uses
- Beds, borders, cut flowers
Care notes
Pruning and caring for Delphinium 'Blue Mirror'
- Propagation
- Basal cuttings in early spring
- Pest resistance
- Aphids, earwigs, delphinium leaf miner, delphinium moth caterpillars, slugs, snails, caterpillars
- Disease resistance
- Powdery mildews, delphinium black blotch, crown rot, viruses
Frequently asked questions
Where is the best place to plant Delphinium 'Blue Mirror'?
Delphinium 'Blue Mirror' prefers full sun. It suits sheltered positions.
What soil does Delphinium 'Blue Mirror' need?
Delphinium 'Blue Mirror' grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is Delphinium 'Blue Mirror' hardy in the UK?
Delphinium 'Blue Mirror' 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 'Blue Mirror'?
Basal cuttings in early spring.
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'