Overview
Delphinium 'Patricia Johnson' is a clump-forming, upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with divided green leaves foliage. Delphinium 'Patricia Johnson' 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 'Patricia Johnson' is a clump-forming, upright herbaceous perennial belonging to the Ranunculaceae family. Like other Delphiniums, it features divided green leaves and 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. Hardy to UK zone H5, it is suitable for beds, borders, and as cut flowers. Cultivation involves staking tall plants and mulching in spring, with propagation by basal cuttings taken 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 'Patricia Johnson' 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 'Patricia Johnson'
- 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 'Patricia Johnson'?
Delphinium 'Patricia Johnson' prefers full sun. It suits sheltered positions.
What soil does Delphinium 'Patricia Johnson' need?
Delphinium 'Patricia Johnson' grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is Delphinium 'Patricia Johnson' hardy in the UK?
Delphinium 'Patricia Johnson' 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 'Patricia Johnson'?
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'