How to grow portuguese laurel
Overview
Portuguese laurel is a dense evergreen shrub grown for hedging and garden structure in cool to temperate climates. It offers year-round foliage, subtle white spring flowers, and high frost tolerance. Key is to plant in well-drained soil and protect from extreme afternoon heat.
Varieties
- Prunus lusitanica 'Variegata' — A variegated form with cream-edged dark green leaves, less vigorous but striking for accent hedging.
Soil Preparation
Prefers well-drained loamy to sandy soil with pH 6.0–7.5. Incorporate organic compost or aged manure before planting to improve structure. Avoid heavy clay or waterlogged sites; raise beds if drainage is poor.
Growing Guide
Plant in part shade to full sun, avoiding scorching afternoon rays in warmer areas. Space 1–2 m apart for a dense hedge. Dig a hole twice the root ball width, backfill with well-drained loamy soil. Water deeply until established (first 1–2 years). Prune in late summer after flowering to maintain shape.
Care
Feed with a balanced slow-release fertiliser (e.g., 8-4-6) in early spring and again in autumn. Mulch 5–8 cm deep around the base, keeping clear of the stem. Lightly prune after flowering to maintain shape, and remove dead or damaged wood in late winter.
Companion Planting
Good companions for formal hedging include box (Buxus), Camellia, and Viburnum tinus. Avoid planting near shallow-rooted competition like privet or large trees that create heavy shade and root congestion.
Common Pests & Risks
Aphids and scale insects can weaken growth; spray with horticultural oil or systemic insecticide in early spring. Shot hole disease (Wilsonomyces carpophilus) causes circular leaf spots; prune affected foliage and improve air circulation. Monitor for powdery mildew in humid conditions.
Troubleshooting
Yellow leaves: often waterlogged soil or iron chlorosis; improve drainage and apply chelated iron if soil pH is high. Brown leaf edges: caused by wind desiccation or salt burn; shelter from drying winds and flush soil with water. Leaf spots: shot hole disease; remove infected leaves and apply copper fungicide. Sparse growth: too much shade or nutrient deficiency; move to sunnier spot and feed. Scale insects: sticky honeydew and sooty mould; treat with white oil or systemic insecticide.