Can Clematis and Climbing Roses Be Grown Together?
Growing clematis alongside climbing roses can be a highly successful and visually appealing combination, provided you attend to the specific needs and conditions of both plants.
What Are the Compatibility Factors?
Conditions
Both clematis and climbing roses thrive in similar conditions:
- Light: They prefer a bright, sheltered location, such as a west-facing fence, wall, or pergola. This protects them from harsh winds and provides ample sunlight[5].
- Soil Type: A fertile, moisture-retentive but free-draining soil is ideal. The soil should be enriched with well-rotted manure and/or garden compost[5].
- Moisture Levels: The soil should retain moisture but drain well to prevent waterlogged conditions. Consistent moisture, especially during the first year after planting, is crucial[5].
Recommended Varieties
For a harmonious and disease-resistant combination:
- Clematis viticella: Known for its hardiness, drought tolerance, and long flowering period (July-September). It is robust but not overly vigorous, making it a great match for climbing roses[5].
- Clematis texensis: This includes varieties like ‘Princess Diana’, ‘Princess Kate’, and ‘Prince William’. These are late-flowering (August-October) and suitable for pairing with climbing roses[5].
- Clematis flammula: Varieties such as ‘Sweet Summer Love’ also associate well with vigorous climbing roses[5].
For climbing roses, look for disease-resistant varieties that complement the flowering times and growth habits of the chosen clematis.
How to Grow Clematis and Climbing Roses Together?
Spacing
- Plant the clematis and climbing roses 45cm-60cm apart. Ensure the root-ball of each plant is pre-soaked and planted at the same depth as it was in its pot[5].
- For a 17ft fence, you can space the plants about 3-4 feet apart, allowing for adequate growth and support.
Support Structures
- Climbing roses need strong support, such as horizontal tiers of garden wire secured to screws or a metal grid fixed to the wall[5].
- The thorny stems of the roses provide a natural scaffold for the clematis to climb, but additional support may be necessary for the clematis, especially if it is a vigorous variety[5].
What Maintenance is Required?
Pruning
- Prune climbing roses according to their specific pruning needs, usually in late winter or early spring. Be cautious not to damage the clematis growth. For clematis, pruning times vary by group:
- Group 1: Prune immediately after flowering.
- Group 2: Prune in late winter or early spring, removing dead and weak growth.
- Group 3: Prune hard in late winter or early spring[5].
Fertilization
- Use a slow-release organic fertilizer when planting and during the growing season. Tomato fertilizer can also be used if the plants need a boost[4].
Pest Control
- Regularly inspect the plants for pests like aphids, black spot, and powdery mildew. Use organic or chemical controls as necessary to prevent the spread of disease.
- Maintain good air circulation and remove any infected leaves or stems promptly[5].
What Are the Challenges?
Disease and Competition
- Disease: Both plants can be susceptible to diseases like black spot and powdery mildew. Ensure good air circulation, remove infected parts, and use fungicides if necessary[5].
- Competition for Nutrients: Both plants benefit from fertile soil enriched with compost and manure. Avoid over-fertilizing, as this can lead to weak growth and increased susceptibility to disease[5].
Mitigation
- Plant healthy, disease-free specimens.
- Prepare the soil well in advance with well-rotted manure and compost.
- Water regularly, especially during dry periods, until the plants are established.
- Provide adequate support and prune carefully to avoid damaging either plant.
