Tamarillo Tree (Tree Tomato) – How to Grow and Care in Australia

The tamarillo tree, also known as the tree tomato (Cyphomandra betacea), is a fast-growing subtropical fruiting tree loved for its vibrant, tangy, tomato-like fruit.

Native to South America and well-suited to warmer regions of Australia, the tamarillo thrives in full sun and free-draining soil. Mature trees typically reach 2–5 m tall with a spreading canopy and large, soft leaves that can be sensitive to wind damage. Tamarillo fruit develops on branches after the first year and ripens in late autumn through winter, providing a seasonal crop of red, orange, or yellow fruits.

For best results, plant tamarillo trees in a location with frost protection and consistent watering during dry months. These trees are relatively short-lived, producing reliably for 5–12 years, with peak fruiting typically between years 3 and 6.

Understanding its growth cycle and seasonal care needs is essential to keep your tamarillo healthy, fruiting consistently, and resistant to stress from weather or pests.

Tamarillo Tree Care and Seasonal Fertiliser Schedule

Tamarillo trees are hungry feeders and respond well to a regular fertilisation schedule combined with proper watering and pruning. Deep, consistent watering during the growing season ensures the fruit develops without splitting, while avoiding waterlogging is crucial for root health.

Pruning is best done after harvest to maintain a strong structure and airflow, which prevents branch breakage and encourages new productive shoots. Removing lower branches also helps with airflow and makes fruit harvesting easier.

Season	Growth Focus	Fertiliser Guidance
Late Winter (Aug)	Root activation & new shoots	Light application of a balanced NPK to prepare for spring growth
Spring (Sep–Nov)	Leaf flush & flowering	Apply NPK fertiliser every 4–6 weeks; moderate nitrogen to support leaf and flower growth
Summer (Dec–Feb)	Fruit swelling & early ripening	Use a potassium-rich feed to boost fruit size, colour, and flavour
Autumn (Mar–May)	Post-harvest recovery	Light phosphorus-rich feeding to restore root strength and prepare for dormancy

Avoid over-fertilising with high nitrogen products, as this can lead to lush leaves and weak fruiting. Regular, moderate feeding ensures a steady supply of nutrients for healthy growth and consistent harvests.

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Tamarillo Tree FAQs and Recommended Fertiliser

Tamarillo growers often have questions about fruiting, ripening, and long-term care.
Here are the most common queries, answered in detail:

Do tamarillos ripen off the tree?
Yes. Harvest when the fruit starts to soften and shows full colour. Tamarillos can ripen further indoors, becoming sweeter and less tart.
How big do tamarillo trees grow?
Most trees reach 2–5 m tall in ideal conditions, though pruning can keep them compact for small gardens.
How long do tamarillo trees live?
Typically 5–12 years, with peak productivity between 3–6 years. Trees may decline faster in exposed or frost-prone areas.
When should I fertilize tamarillo trees?
Fertilise every 4–6 weeks during spring and summer, and apply a light feed in autumn after harvest to support root recovery.
What is the best fertilizer for tamarillo trees?
Because tamarillos are part of the tomato family, a fertiliser formulated for tomatoes works exceptionally well.
We recommend CompleteGrow Advanced Formula NPK 4-18-38 + Calcium & Magnesium,
which promotes strong fruiting, improves flavour, and helps prevent nutrient deficiencies common in tomato-family crops.

By following this seasonal care and feeding schedule, your tamarillo tree will reliably produce tangy, flavour-rich fruits, turning your garden into a tropical harvest spot year after year.