Combretum collinum
Combretum collinum · Combretaceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around combretum collinum and prepare for winter.
ID card
- Common name
- Red-flowered ivy, Red combretum
- Family
- Combretaceae
- Plant type
- Climbing vine (climber)
- Foliage
- Deciduous to semi-evergreen depending on climate
- Flowering
- Summer to autumn (July-September)
- Flower color
- Scarlet red to orange-red
- Mature size
- 3 to 6 m depending on conditions
- Hardiness
- Frost-tender (tropical to subtropical climate)
- Origin
- Sub-Saharan Africa
- Growth rate
- Fast in warm climates
Care
Light exposure
Plant Combretum collinum in full sun for generous flowering. It tolerates partial shade, but flowers will be less abundant. In Mediterranean climates, a slight afternoon shading protects against excessive summer heat.
Watering
Water regularly during active growth, particularly in summer and during flowering. Keep the soil moist but not waterlogged. Reduce watering in winter in temperate regions or during the dry season. Monitor young plants as they require more water.
Soil and substrate
Prefer rich, well-draining soil that is slightly acidic to neutral. Adding compost at planting encourages rooting. In containers, use quality potting soil enriched with organic matter. Add sand or clay pellets to improve drainage.
Feeding
During the growing season (spring-summer), apply a balanced fertilizer every 2 to 3 weeks. Use a potassium-rich fertilizer when flowering begins to enhance flower color. Stop fertilizing in winter.
Pruning and training
Pinch back young stems regularly to encourage branching. Carry out cleanup pruning after flowering: remove dead wood and weak stems. Train the vine on its support in February-March before growth resumes. Wear gloves, as stems can be irritating.
Pests and diseases
Watch for spider mites in dry conditions: mist the foliage regularly. Mealybugs and aphids can colonize young shoots; treat if they become prolific. Excessive stagnant humidity promotes root rot: improve drainage and ensure good air circulation.
Did you know?
Combretum collinum has long been used in traditional African medicine for its purported properties. Its flaming red flowers attract hummingbirds and pollinators, making it a valuable plant for biodiversity gardens in warm climates. In South Africa, it is one of the most cultivated ornamental vines for covering pergolas and arbors.
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.