How to grow kangaroo apple
Overview
Kangaroo apple (Solanum aviculare) is a fast-growing, short-lived shrub native to eastern Australia and New Zealand. It is grown for its ornamental yellow flowers and edible orange fruit, which must be fully ripe to avoid toxicity. It thrives in full sun and well-drained soil.
Soil Preparation
Prefers well-drained sandy loam with pH 6.0–7.0. Add compost before planting; avoid heavy clay or waterlogged sites. Mulch to retain moisture but keep away from stem.
Growing Guide
Plant in full sun with well-drained soil; space 1–1.5 m apart. Sow seed 5 mm deep in spring or early autumn, or transplant seedlings after frost. Water regularly until established, then reduce to moderate. It grows quickly and benefits from a light prune after fruiting to maintain shape.
Sowing
Sow seed 5 mm deep in seed trays or direct in spring (temperate) or autumn (subtropical). Germinates in 10–14 days at 20–25°C. Transplant when 10 cm tall; space 1 m apart.
Care
Feed with a balanced slow-release fertiliser in early spring. Prune after harvest to remove old wood and shape; replace every 2–3 years as it is short-lived. No staking needed.
Companion Planting
Grow with native shrubs like lomandra and callistemon for habitat. Avoid planting near potatoes or tomatoes to reduce risk of shared pests like potato beetles.
Common Pests & Risks
Watch for potato beetles (Leptinotarsa juncta) on leaves; handpick or use neem oil. Aphids and whitefly may appear in humid conditions; control with insecticidal soap or strong water spray.
Harvesting
Harvest fruit when fully ripe and bright orange, typically 4–6 months after flowering. The fruit splits easily when soft; pick by hand and use immediately. Unripe green fruit is highly toxic and must not be eaten.
In the Kitchen
Use fully ripe orange fruit raw in jams, chutneys, or desserts. It has a mild sweet flavour; store in fridge for up to 1 week. Do not eat green fruit.
Troubleshooting
Yellow leaves: overwatering or poor drainage; reduce water and improve soil. Brown leaf edges: wind or salt burn; shelter or move. Fruit not ripening: cool weather or shade; move to sun. Stunted growth: poor soil; add compost. Potato beetles: handpick or neem oil.