Overview
Delphinium 'Jupiter Blue' (Jupiter Series) is a clump-forming, upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with divided green leaves foliage. Delphinium 'Jupiter Blue' (Jupiter Series) 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 'Jupiter Blue' (Jupiter Series) is a herbaceous perennial cultivar within the Delphinium genus, known for its clump-forming, upright habit and divided green leaves. Like other Delphiniums, it produces prominent, bowl-shaped flowers arranged in spikes. This cultivar thrives in fertile, moist but well-drained loam soil with a neutral pH, ideally in full sun and a sheltered position facing south, west, or east. Suitable for beds, borders, and cut flowers, it is hardy to UK zone H5 and benefits from staking and mulching in spring. Propagation is by basal cuttings in early spring, with interest during spring and summer.
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 'Jupiter Blue' (Jupiter Series) 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 'Jupiter Blue' (Jupiter Series)
- 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 'Jupiter Blue' (Jupiter Series)?
Delphinium 'Jupiter Blue' (Jupiter Series) prefers full sun. It suits sheltered positions.
What soil does Delphinium 'Jupiter Blue' (Jupiter Series) need?
Delphinium 'Jupiter Blue' (Jupiter Series) grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is Delphinium 'Jupiter Blue' (Jupiter Series) hardy in the UK?
Delphinium 'Jupiter Blue' (Jupiter Series) 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 'Jupiter Blue' (Jupiter Series)?
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'