How to grow lilly pilly
Overview
Lilly pilly (Syzygium australe) is an Australian native evergreen tree valued for its dense foliage, colourful berries, and versatility as a hedge or screen. It grows best in part shade with moist, well-drained soil and is moderately frost-sensitive, requiring protection in colder areas.
Varieties
- Bush Christmas — Compact form with large, edible berries; popular for hedges and containers in AU/NZ.
- Aussie Southern — Dense, low-maintenance variety reaching 3–4m; excellent for formal hedging.
- Tiny Trev — Dwarf cultivar growing 1–2m, ideal for small gardens and pots.
- Silver Streak — Variegated foliage with creamy edges; adds ornamental interest, slow-growing.
Soil Preparation
Prefers slightly acidic soil (pH 5.5–6.5). A well-drained loam enriched with compost or aged manure is ideal. For heavy clay, amend with gypsum and organic matter to improve drainage and aeration.
Growing Guide
Plant lilly pilly in a position that receives morning sun and afternoon shade, especially in hot climates. Space plants 1–3 metres apart for a dense hedge, or further for a specimen tree. Dig a hole twice the width of the root ball, enrich with organic matter, and water deeply after planting. Mulch around the base but keep it clear of the trunk to prevent rot. Avoid planting during frost periods; late spring is ideal.
Sowing
Sow fresh seed 5 mm deep in seed-raising mix and keep consistently moist. Germination takes 3–6 weeks at 20–25°C. Transplant seedlings to pots when 10–15 cm tall. For faster results, purchase advanced plants from a nursery.
Care
Feed with a low-phosphorus native fertiliser in early spring and again after fruiting in autumn. Prune lightly after harvest to maintain shape and remove any psyllid-damaged or dead wood. Renew mulch annually to retain moisture and suppress weeds.
Companion Planting
Lilly pilly pairs well with other moisture-loving Australian natives such as Callistemon (bottlebrush), Melaleuca (paperbark), and Hakea. Avoid planting near aggressive species like privet that can outcompete for water and nutrients.
Common Pests & Risks
Psyllids cause characteristic pimple-like bumps on leaves; control with horticultural oil or systemic insecticide. Scale insects can be treated with white oil. Myrtle rust (Austropuccinia psidii) produces bright yellow spores – prune affected growth and apply a registered fungicide. Good airflow and spacing reduce disease pressure.
Harvesting
Harvest lilly pilly berries when they turn a deep pink to purplish-red and yield slightly to pressure. Pick individually or snip small clusters; use fresh or freeze for later. Berries ripen from late summer to autumn.
In the Kitchen
Berries have a tart, apple-like flavour and are rich in vitamin C. Use them in jams, sauces, and desserts, or eat fresh. Store in the refrigerator for up to a week, or freeze for months.
Troubleshooting
Yellow leaves with green veins: iron deficiency from alkaline soil; apply chelated iron. Pimple-like bumps on leaves: psyllid infestation; treat with horticultural oil. Powdery white coating: powdery mildew; improve airflow and use fungicide. Leaf drop after frost: protect with frost cloth. Stunted growth: check for root rot due to poor drainage.