Chinese Trumpet Vine
Campsis grandiflora · Bignoniaceae
📷 Wikimedia Commons · CC BY-SA 2.0
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The gardener's calendar
Chinese trumpet vine is in full bloom: enjoy it, watch watering in hot weather and let spent flowers feed pollinators before pruning.
ID card
- Foliage
- Deciduous
- Flowering
- July to September
- Mature size
- Up to 6 m in height
- Growth
- Fast
- Hardiness
- Down to approximately -15°C
- Origin
- China
- Growth habit
- Perennial climber
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability medium.
Expert tips
The key tip
Campsis grandiflora flowers beautifully if you set up solid support (trellis, pergola) and accept hard pruning after flowering to control its vigor. Keep the base moist during its first year, then it becomes very self-sufficient.
The common mistake
Letting it grow into a mass without regular pruning: it gets choked and flowers poorly due to lack of light at the tips.
The pro's trick
Cut it back to 30 cm from the ground in late February, even if it looks drastic: it'll come back with way more flowers that year.
Care
Exposure
Chinese trumpet vine loves full sun to flower generously. Plant it facing south or southwest, sheltered from strong winds if possible. It can tolerate slightly shaded conditions but flowering will be less spectacular.
Watering
Water regularly after planting to establish roots well. Once established, watering needs are moderate: only water during prolonged dry periods or intense heat. In winter, reduce watering considerably.
Soil and planting
Prefer well-draining soil, lightly enriched with organic matter. Avoid overly wet or waterlogged soil that promotes root rot. Adding compost at planting helps with establishment.
Pruning and maintenance
Prune after flowering or in late winter to control its vigorous growth and encourage branching. Remove dead or weak stems. Guide the shoots onto a sturdy support (trellis, pergola) from the start.
Fertilizer
A balanced fertilizer applied in spring is generally sufficient. Avoid excessive nitrogen which promotes foliage at the expense of flowers. Annual mulching at the base can replace some applications.
Pests and diseases
Chinese trumpet vine is generally robust. Watch for spider mites in dry, hot conditions. Powdery mildew can appear in humid, enclosed environments: ensure good air circulation. Chemical treatment is usually unnecessary on a well-maintained plant.
Did you know?
Chinese trumpet vine has been admired by gardeners worldwide since its introduction to the West in the 18th century. Its tubular orange-red flowers are highly appreciated by hummingbirds and bees. In Asia, it symbolizes luck and prosperity, and is traditionally grown near entrances to welcome positive energy.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
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Tips generated and checked by Viridia — adapt them to your local climate.