Overview
Agapanthus 'Double Diamond' is a perennial in the genus Agapanthus, part of the Amaryllidaceae family. Agapanthus 'Double Diamond' grows best in full sun and partial shade, and tolerates well-drained soil soils and neutral and alkaline pH. Its UK hardiness is rated H5. Suggested uses include borders, containers and cut flowers.
About
Agapanthus 'Double Diamond' is a clump-forming perennial with strap-shaped leaves and large, double, deep blue to violet flower heads appearing in summer.
About the genus
Agapanthus is a genus of plants, the only one in the subfamily Agapanthoideae of the family Amaryllidaceae. The subfamily was formerly treated as a separate family, Agapanthaceae. The family is in the monocot order Asparagales.
Wikipedia contributors, "Agapanthus", CC BY-SA 4.0 — Agapanthus
Growing conditions
Best soil and position for Agapanthus
- Sunlight
- full sun, partial shade
- Soil type
- well-drained soil
- Soil pH
- neutral, alkaline
- Soil moisture
- moderate
- Aspect
- south-facing
- Exposure
- sheltered to exposed
- UK hardiness
- H5
Plant details
Agapanthus 'Double Diamond' size, habit and characteristics
- Plant type
- perennial
- Suggested uses
- borders, containers, cut flowers
Care notes
Pruning and caring for Agapanthus 'Double Diamond'
- Cultivation
- Plant in spring or autumn; prefers well-drained soil and full sun; mulch in winter in colder areas.
- Pruning
- Remove spent flower heads to encourage new blooms; cut back foliage in late winter if damaged.
- Propagation
- division in spring or autumn
Frequently asked questions
How do I grow Agapanthus 'Double Diamond'?
Plant in spring or autumn; prefers well-drained soil and full sun; mulch in winter in colder areas.
Where is the best place to plant Agapanthus 'Double Diamond'?
Agapanthus 'Double Diamond' prefers full sun and partial shade. It suits sheltered to exposed positions.
What soil does Agapanthus 'Double Diamond' need?
Agapanthus 'Double Diamond' grows best in well-drained soil soil. It prefers neutral and alkaline soil. Aim for soil that stays moderate.
How do I prune Agapanthus 'Double Diamond'?
Remove spent flower heads to encourage new blooms; cut back foliage in late winter if damaged.
Is Agapanthus 'Double Diamond' hardy in the UK?
Agapanthus 'Double Diamond' 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 Agapanthus 'Double Diamond'?
Division in spring or autumn.
More in the Agapanthus genus
- Agapanthus 'Maureen'African Lily
- Agapanthus 'Black Buddhist'African Lily
- Agapanthus 'Northern Star'Lily of the Nile
- Agapanthus nutansAfrican Lily