Overview
Rhododendron 'Libretto' is a bushy shrubs in the genus Rhododendron, part of the Ericaceae family, with evergreen foliage. Rhododendron 'Libretto' grows best in partial shade, and tolerates loam soils and acid pH. Its UK hardiness is rated H5. Suggested uses include woodland gardens and containers on shaded patios.
About
Rhododendron 'Libretto' is an evergreen shrub with a well-branched, rounded habit that flowers from April to June. It performs best in partial shade on acid loam that remains moist but is well drained. Plant in a sheltered, east- or west-facing spot and it suits woodland borders or containers on shaded patios. H5 hardiness means it is hardy across much of the UK when given protection from exposure.
About the genus
Rhododendron, from Ancient Greek ῥόδον (rhódon), meaning "rose", and δένδρον (déndron), meaning "tree", is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia.
Wikipedia contributors, "Rhododendron", CC BY-SA 4.0 — Rhododendron
In the garden
Rhododendron 'Libretto' is an evergreen member of the Ericaceae grown for its spring bloom and compact, well-branched form. It favours position rather than sun; give it partial shade and a sheltered aspect on the east or west side of a building or within a woodland canopy so shoots and flower trusses are not exposed to drying winds. Soil is critical: plant into a free-draining loam with an acid reaction and keep the root run evenly moist. Avoid waterlogged ground but do not let the rootball dry out; a mulch of acid bark will help retain moisture and moderate soil temperature. In containers, use an ericaceous compost and ensure the pot sits out of prevailing wind on a shaded patio. Rhododendron 'Libretto' carries an H5 rating, meaning it is hardy in most UK gardens provided it is sited in a sheltered position. Suggested placements are under taller deciduous trees or at the back of a shady border where it can be appreciated at close range, and in pots where you can control soil conditions. For a strong show, position containers in an east- or west-facing sheltered spot ahead of the April to June flowering season to protect emerging buds.
Growing conditions
Best soil and position for Rhododendron
- Sunlight
- Partial shade
- Soil type
- Loam
- Soil pH
- Acid
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Rhododendron 'Libretto' size, habit and characteristics
- Plant type
- Shrubs
- Habit
- Bushy
- Foliage
- Evergreen
- Suggested uses
- Woodland gardens, Containers on shaded patios
Care notes
Pruning and caring for Rhododendron 'Libretto'
- Propagation
- Semi-ripe cuttings, Layering, Grafting
- Pest resistance
- Vine weevil, Rhododendron leafhopper, Pieris lacebug, Scale insects, Caterpillars, Aphids
- Disease resistance
- Powdery mildews, Rhododendron petal blight, Rhododendron bud blast, Silver leaf, Honey fungus
Frequently asked questions
Where is the best place to plant Rhododendron 'Libretto'?
Rhododendron 'Libretto' prefers partial shade. It suits sheltered positions.
What soil does Rhododendron 'Libretto' need?
Rhododendron 'Libretto' grows best in loam soil. It prefers acid soil. Aim for soil that stays moist but well-drained.
Is Rhododendron 'Libretto' hardy in the UK?
Rhododendron 'Libretto' 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 Rhododendron 'Libretto'?
Semi-ripe cuttings, Layering, Grafting.
More in the Rhododendron genus
- Rhododendron 'Falling Snow'
- Rhododendron 'Pink Cherub'
- Rhododendron 'Silver Thimbles' (V)
- Rhododendron ochraceum
- Rhododendron trichostomum deep form
- Rhododendron 'Ben Vrackie' (K)
- Rhododendron 'Diana'
- Rhododendron Dramatic Dark ('Hachdram'PBR)