Viburnum
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How to Make Viburnum Grow Faster
Viburnum is naturally fast-growing, especially Sweet Viburnum (V. odoratissimum), but many hedges still grow slower than expected. Growth speed is influenced by soil quality, sunlight, water, pruning practices, and above all, fertiliser. By improving these conditions, Viburnum hedges can reach full height and density much faster.
Key Factors in Growth Speed
- Sunlight: At least six hours per day ensures maximum growth and dense foliage.
- Soil quality: Loamy, well-drained soil supports strong root development.
- Water: Regular, deep watering in the first two years helps establish a fast-growing root system.
- Pruning: Light, regular trims stimulate bushy new growth rather than long, sparse shoots.
The Role of Fertiliser in Faster Growth
Fertiliser is the most effective way to accelerate Viburnum growth. Without it, even well-watered plants grow slowly and unevenly. A balanced fertiliser program fuels rapid, healthy flushes of foliage and thickens the hedge far more quickly.
The best choice is Complete Grow All Purpose Liquid NPK 20-20-20. This fast-absorbing fertiliser delivers:
- Nitrogen: Drives fast, lush leaf production for quick height and width gains.
- Phosphorus: Supports strong root growth, anchoring the hedge for long-term development.
- Potassium: Improves leaf quality, making foliage more resistant to stress and disease.
Apply every 4โ6 weeks in spring and summer, and always after pruning. This ensures steady, rapid growth throughout the active seasons.
Mistakes That Slow Viburnum Growth
Common reasons Viburnum hedges fail to grow quickly include:
- Planting in poor soil without improving fertility.
- Irregular or shallow watering, leading to stressed roots.
- Skipping fertiliser applications, leaving the hedge nutrient-deficient.
- Over-pruning, which weakens plants and delays regrowth.
To fix slow growth, adjust watering, prune lightly, and introduce a regular feeding program with Complete Grow All Purpose Liquid NPK 20-20-20. Within weeks, new flushes of dense foliage should appear.
FAQ โ Making Viburnum Grow Faster
How can I speed up Viburnum hedge growth? Ensure full sun, deep watering, and regular fertiliser feeding.
Which fertiliser makes Viburnum grow faster? A balanced liquid like Complete Grow 20-20-20 for immediate nutrient uptake.
Does pruning help Viburnum grow faster? Yes, light pruning stimulates bushier regrowth, especially when combined with fertiliser.
How quickly can Viburnum grow per year? Sweet Viburnum can add 30โ60 cm annually when fed regularly.
Why is my Viburnum still slow? Often due to nutrient deficiencies or lack of consistent watering during establishment.
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What is NPK 20-20-20 Fertiliser?
