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About this product
Rhododendron 'cosmopolitan' Rose' / 10L / 50Cm
Rhododendron 'Cosmopolitan'
Confirmed format: 10 litre pot
Plant Highlights
- Showy trusses of bright pink to rose flowers with deep red blotches
- Dense evergreen dark green foliage offering year-round structure
- Bushy, rounded and upright habit
- Ideal for acidic borders, woodland gardens and patio containers
- Exceptionally hardy (RHS H6)
Overview
Rhododendron 'Cosmopolitan' is an outstanding evergreen shrub prized for its vibrant late spring bloom display and lush, year-round foliage. In May and June, it produces spectacular rounded trusses of funnel-shaped, pink and rose flowers, each highlighted by a dramatic deep red central flare. With a second flush sometimes appearing in autumn, this slow-growing shrub forms a broad, dense, and bushy habit, reaching 1.5 metres in height and spread at maturity. Its dark green, glossy leaves provide excellent year-round structure, making it a magnificent specimen for acid shrub borders, woodland garden schemes, or large patio containers.
Why We Love It
- Produces spectacular trusses of pink flowers with striking deep red markings in late spring.
- Glossy dark green evergreen foliage maintains garden structure across all seasons.
- Forms a neat, bushy, and rounded shrub suitable for prominent garden focal points.
- Exceptionally cold-hardy and reliable in Irish gardens.
- Well suited to containers when grown in ericaceous compost.
Plant Details
| Botanical Name | Rhododendron 'Cosmopolitan' |
|---|---|
| Plant Type | Shrub |
| Foliage Persistence | Evergreen |
| Foliage Colours | Green |
| Flower Colour | Red, pink, rose, bicolour and multicolour |
| Flowering Season | May, June, September and October |
| Growth Habit | Bushy, rounded and upright |
| Growth Rate | Slow |
| Mature Height | 150 cm |
| Mature Spread | 150 cm |
| Hardiness | RHS H6 ( hardy down to -23C) |
Growing Guide
| Position | Plant in partial shade or sun-part-shade in a sheltered position. |
|---|---|
| Soil | Requires moist, consistently moist, well-drained or moisture-retentive acidic soil (pH 4.5-6.0) across loam, clay, sand or peat textures. If growing in a container, use ericaceous compost. |
| Watering | High water need. Keep soil consistently moist. |
| Mulching | Apply a mulch of organic matter suitable for acid-loving plants. |
| Pruning | Prune in June following Pruning Group 8 guidelines, with deadheading recommended. |
Perfect For
- Acid-loving garden borders
- Woodland and shade gardens
- Cottage gardens
- Patio containers
- Screening and hedging
Good to Know
- All parts of the plant are toxic if ingested and it is toxic to cats, dogs and horses.
- Provides attractive support for pollinators when in flower.
- Benefits from protection in sheltered positions away from cold winds.
Product Information
| Supplied Format | 10 litre pot |
|---|---|
| Supplied Height | 50 cm |
| Life Cycle | Perennial |
| Care Level | Easy |
Growing & care
- Plant type
- shrub
- Flowering
- Rose
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