Overview
Hyssopus officinalis 'Caeruleus' is a bushy, spreading branched, columnar upright herbaceous perennial in the genus Hyssopus, part of the Lamiaceae family, with semi evergreen foliage. Hyssopus officinalis 'Caeruleus' grows best in full sun, and tolerates loam soils and alkaline and neutral pH. Its UK hardiness is rated H7. Suggested uses include rock garden, city and courtyard gardens, cottage and informal garden, wildlife gardens, ground cover and flower borders and beds.
About
Hyssopus officinalis 'Caeruleus' is a semi-evergreen cultivar of the Hyssopus genus, which includes herbaceous perennials and evergreen shrubs with long, fragrant leaves. This bushy, spreading plant produces clusters of tubular, two-lipped flowers arranged in spike-like inflorescences during spring and summer. It thrives in full sun on fertile, well-drained loam soil with an alkaline to neutral pH. Suitable for a variety of garden settings, including rock gardens, cottage gardens, and wildlife areas, it is hardy in the UK (H7) and can be propagated by seed or softwood cuttings in summer.
Growing conditions
Best soil and position for Hyssopus
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
Hyssopus officinalis 'Caeruleus' size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Bushy, Spreading branched, Columnar upright
- Foliage
- Semi evergreen
- Suggested uses
- Rock garden, City and courtyard gardens, Cottage and informal garden, Wildlife gardens, Ground cover, Flower borders and beds
Care notes
Pruning and caring for Hyssopus officinalis 'Caeruleus'
- Propagation
- Seed, Softwood cuttings in summer
- Pest resistance
- Leafhoppers
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Hyssopus officinalis 'Caeruleus'?
Hyssopus officinalis 'Caeruleus' prefers full sun. It suits exposed and sheltered positions.
What soil does Hyssopus officinalis 'Caeruleus' need?
Hyssopus officinalis 'Caeruleus' grows best in loam soil. It prefers alkaline and neutral soil. Aim for soil that stays well-drained.
Is Hyssopus officinalis 'Caeruleus' hardy in the UK?
Hyssopus officinalis 'Caeruleus' has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Hyssopus officinalis 'Caeruleus'?
Seed, Softwood cuttings in summer.
