Campsis grandiflora
Campsis grandiflora
Campsis grandiflora
Campsis grandiflora
Campsis grandiflora
Campsis grandiflora
Trumpet Vine
Following a weak and very slow start, this Bignonia has been the subject of care and attention throughout the summer. It is now more vigorous and I hope to see a flower next year. I had expected a more robust plant.
Luisa, 14/08/2025
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Description
Campsis grandiflora, also known as the trumpet vine, is a stunning deciduous Chinese species with spectacular summer flowering. This deciduous climbing plant reaches several metres with its vigorous woody climbing stems equipped with a few aerial roots that allow it to cling to a wall, much like ivy. The flowering lasts at least 3 months, in the form of large pendulous panicles composed of wide flared trumpets in a very bright orange-red shade. These become more apricot over time. Campsis is not the most cold-resistant, but it adapts well to any ordinary soil and shows very rapid growth. With its heavy flowering, the plant should be trained and protected from wind that damages flowers and leaves. The climbing roots are sometimes too few on the branches to ensure proper anchoring of this trumpet creeper to fully support it.
Campsis grandiflora is a plant from the Bignoniaceae family, native to southeastern China and Japan. Introduced to France around 1800, this fast-growing deciduous climber has a bushy habit that allows it to reach 6 to 8 m (20 to 26ft) in all directions in just a few years. Its growth, however, is easily controlled by regular pruning in winter, which does not compromise flowering. The plant has a woody stump and produces fairly shallow roots. The abundant and spectacular flowering occurs after a few years of cultivation, on the young shoots. It can begin in July in mild climates, but usually begins in August and lasts until October. The large flowers bloom in the axils of the leaves, in pendulous clusters of 4 to 12 funnel-shaped flowers, 10 cm (4in) long, flaring widely into 5 lobes. Each flower opens in a very bright orange-red colour, evolving to a soft apricot shade at maturity. Each flower has a beautiful striated yellow throat where long arched stamens nest. The flowering is followed by the formation of brown pods that remain on the plant for a long time before releasing flat and winged seeds, dispersed by the wind. The deciduous foliage is composed of finely divided leaves with 7 to 9 ovate leaflets with serrated edges. It is the branches equipped with a few aerial roots that allow the plant to cling to its support.
Campsis grandiflora can be used anywhere, to cover a wall sheltered from cold winds, an unsightly building, an exposed facade, a fence, or an old wall. This very tolerant plant can withstand short frosts down to -15°C (5°F), in well-drained soil and in a sheltered position. You can associate it, for example, with other unique climbing plants such as Akebia quinata, Actinidia kolomikta, Holboellia latifolia, or the Clematis H F Young, which is very blue, to create a colourful scene.
Campsis grandiflora in pictures
Plant habit
Flowering
Foliage
Botanical data
Campsis
grandiflora
Bignoniaceae
Trumpet Vine
Cultivar or hybrid
Planting and care
The Chinese trumpet vine is a plant that is undemanding on the nature of the soil, but it dislikes heavy, compact, poorly drained soils, where moisture can stagnate. If the soil in your garden is too heavy, incorporate coarse sand or gravel before planting. It grows in any well-drained garden soil, even if it is quite poor and chalky. It prefers a sunny position, sheltered from strong winds which cause the flowers to fall, dry out the leaf margins, and tear the plant away from its support. Plant it along a well-exposed wall or against a tree, guiding it with a stake. Water regularly in the first few summers, or in case of prolonged drought. The plant can tolerate moderate periods of drought once established, especially if it is planted in deep soil. In the first few years, protect its stump from severe frosts with a thick mulch. Pruning is not necessary. If it becomes necessary, you should prune it at the end of winter or in early spring. In August-September, remove the faded branches as well as the oldest shoots recognisable by their cracked bark.
Trumpet vines are often visited by ants that come to collect sweet exudates produced by the flowers, but also by aphids that settle at the tips of the shoots, usually without harming the plant. Powdery mildew can affect the trumpet creeper. Watch for the appearance of mealybugs and the white leafhopper.
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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