How to grow photinia
Overview
Photinia x fraseri is an evergreen shrub valued for its glossy green leaves and striking red new growth, commonly used for formal hedges and screening. It provides garden structure and texture, linking bolder feature plants. Regular pruning is essential to encourage the vibrant red foliage.
Varieties
- Red Robin — The most popular variety in Australia, known for its bright red new growth and vigorous habit.
- Little Red Robin — A compact cultivar ideal for small gardens or containers, with smaller leaves and a dense form.
- Pink Crispy — Features crinkled leaves with pink and red tones, adding unique texture to hedges.
Soil Preparation
Prefers well-drained loamy soil with a pH of 6.0–7.5. For heavy clay, incorporate gypsum and organic matter to improve drainage. Avoid waterlogged sites; raised beds or mounded planting can help in poorly drained areas.
Growing Guide
Plant photinia in full sun for the best red new growth. It prefers well-drained loamy soil; improve heavy clay with organic matter. Space plants 60–100 cm apart for a dense hedge. Dig a hole twice as wide as the root ball, backfill with amended soil, and water deeply after planting. Water regularly during the first growing season to establish a strong root system.
Care
Feed in early spring with a balanced slow-release fertiliser (e.g., 8-4-6). Prune twice a year—after the main spring flush and again in late summer—to promote dense growth and fresh red leaves. Remove any dead, diseased, or crossing branches to maintain a healthy structure.
Companion Planting
Photinia pairs well with other evergreen hedging shrubs like Viburnum odoratissimum, Pittosporum tenuifolium, and Murraya paniculata for a mixed screen. Avoid planting with aggressive groundcovers that compete for moisture. Ornamental grasses such as Pennisetum also offer nice textural contrast.
Common Pests & Risks
Leaf spot (Entomosporium) and scale insects are common. Ensure good airflow and avoid overhead watering to reduce fungal issues. Treat leaf spot with a copper fungicide and control scale with horticultural oil applied during the dormant season.
Troubleshooting
Yellow leaves: often due to poor drainage or overwatering; ensure soil drains freely. Brown leaf edges: wind burn or salt damage; protect from strong winds and avoid over-fertilising. Black spots on leaves: leaf spot fungus; improve airflow and apply a copper fungicide. Lack of red new growth: insufficient sunlight or no pruning; move to full sun and prune regularly. Scale insects: small brown or white bumps on stems; treat with horticultural oil.