Rhododendron Rocket
Rhododendron Rocket
Rhododendron Rocket
Rhododendron
Beautiful young plant, like the rest of my order. It's a shame it lost 2 branches during transportation: despite the fragile indication, to keep it horizontal, the package was shaken in all directions. The sarco had come out of its pot... etc.
Marie-claude.jason, 26/10/2021
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Description
Rhododendron 'Rocket' is an old bush with bright pink flowers that is widely planted in gardens, as well as in large pots to adorn terraces and balconies. Naturally compact and vigorous, this medium-sized bush is covered with beautiful evergreen foliage of a glossy bronze-green colour. It blooms abundantly in spring, and sometimes again in autumn depending on the climate. Its large frilly flowers of vibrant pink will bring life to shaded areas from the first warm days. 'Rhodos', as spectacular as they are exclusive, only thrive in acidic, rich, moist but well-drained soil.
Rhododendrons are plants of the Ericaceae family, just like heathers, preferring for the most part soils devoid of limestone, tending to be acidic, and humid climates. Derived from the hybridization of the variety 'Cunningham's White' and a red R. catawbiense seedling, Rhododendron 'Rocket' remains to this day one of the most popular cultivars. It forms a dense bush with a rounded habit, reaching approximately 1.50 m (5 ft) in height and 1.20 m (4 ft) in width at maturity. Its growth is rather slow, generally reaching 1.20 m (4 ft) in height at the age of 10. Its large evergreen leaves are elliptical in shape and cover the plant well. They are glossy bronze-green on the upper side and show a lighter and fuzzy underside. In May, for about 3 weeks, a remarkably abundant flowering submerges the bush: grouped in large, rounded corymbs of 9 units, beautiful large funnel-shaped flowers in bud red-pink open to pure and vibrant pink, with a deeper hue on the edges and a lighter shade in the throat. The petals of 'Rocket' are highly frilly on the edges, opening to long pink stamens.
Rhododendron 'Rocket' is a flowering plant and quite hardy, down to -15°C or even -20°C. Although they prefer partial shade, hybrid Rhododendrons can tolerate morning sun as long as it is not scorching and their base remains moist. "Rocket", with its abundant and vibrant flowering, will easily adorn a small shaded space in the garden, alongside ferns, hostas, Pieris, heathers, Kalmias, Azaleas, Japanese Maples, or other rhododendrons from the same group to create stunning patchworks of textures and colours in spring. Large rhododendrons can be used to create magnificent hedges, alone or with camellias or mimosa (in mild climates). Cultivating in pots requires regular watering with lime-free water and specific fertilizers for acid-loving plants.
Rhododendron Rocket in pictures
Plant habit
Flowering
Foliage
Botanical data
Rhododendron
Rocket
Ericaceae
Rhododendron
Cultivar or hybrid
Planting and care
Plant the 'Rocket' Rhododendron in a semi-shaded or even shaded position, protected from cold and drying winds, in a moist, humus-rich and light soil, with a tendency towards acidity or neutrality. Like all heathland plants, it does not tolerate chalky soils or heavy soils saturated with water in winter. If the soil remains moist in summer, this rhododendron can also tolerate morning sun exposure. Avoid planting at its base, as its shallow roots do not tolerate competition from other plants, especially for water resources.
Dig a hole three times larger than the pot. Soak the root ball in lime-free water and plant the bush at the collar level, in a mixture composed of leaf compost, gravel or pumice, and loam. Water thoroughly and keep the soil moist in the summer. Azaleas and Rhododendrons have a shallow root system. As a result, they are susceptible to long periods of drought. That's why humus-rich soil and abundant watering during dry periods are recommended. In addition, this root system is not very strong, so it is essential to lighten heavy soils with draining materials (gravel, pumice, clay balls) at planting. Apply a layer of shredded pine bark mulch at the base of the bush every spring to maintain soil moisture while keeping an acidic pH.
Maintenance consists of removing faded flowers in summer and removing dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils that eat the edges of leaves and rootlets, as well as the infamous "rhododendron beetle" which does not often cause severe damage. Effective biological solutions exist today against weevils. Yellowing of the leaves (chlorosis) in Rhododendrons indicates poor assimilation of iron from the soil and can lead to premature death of the plant. While limestone is often the cause, poorly drained soil or deeply planted root balls can also explain the phenomenon.
"Rhodos" thrive in cooler climates, planted in limestone-free soil and in a humid environment. Their cultivation in our hotter and drier climates is often doomed to failure in the long run, despite all the efforts to acclimate them.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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