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Creating a lush, dense hedge with Nandina, also known as Heavenly Bamboo, requires proper training and maintenance. With the right techniques, you can shape your Nandina into a beautiful, effective hedge that adds privacy and aesthetic appeal to your garden.
Choosing the Right Nandina Varieties
Select Nandina varieties that are suitable for hedging, such as Nandina domestica ‘Firepower’ or ‘Gulf Stream’. These varieties tend to grow densely and respond well to pruning, making them ideal for creating a hedge.
Planting and Spacing
Plant Nandina bushes about 2 to 3 feet apart to allow for growth and to create a continuous hedge. Ensure the soil is well-drained and rich in organic matter. Proper spacing is crucial for the plants to fill in and form a dense barrier over time.
Initial Training and Shaping
After planting, prune the Nandina to shape the desired hedge form. Use sharp pruning shears to trim the top and sides, encouraging bushy growth. Focus on removing any dead or weak branches to promote healthy development.
Regular Pruning for Density
Maintain a dense hedge by pruning regularly, ideally in early spring and late summer. Cut back about one-third of the new growth to encourage bushiness and prevent the plants from becoming leggy. Consistent trimming helps maintain the desired height and shape.
Techniques for Effective Training
- Use stakes or a string line to keep the hedge straight and uniform.
- Remove suckers or side shoots that grow inward to maintain airflow and shape.
- Pinch back the tips of new growth to encourage branching.
Dealing with Common Issues
Watch for pests such as aphids or scale insects and treat promptly. Also, ensure proper watering and fertilization to keep the Nandina healthy and vigorous. Healthy plants respond better to training and pruning.
Long-term Maintenance
Over time, continue to prune and shape your Nandina hedge to maintain its density and appearance. Mulch around the base to conserve moisture and suppress weeds. With consistent care, your hedge will become a lush, attractive feature in your landscape.