Mango Trees: When & How to Feed for Juicy, Productive Harvests

Mango trees are a tropical favourite that thrive in many parts of Australia—when given the right care and nutrients. Whether you’re growing in Perth, Darwin, Queensland or a warm coastal region, this guide walks you through how to fertilise mango trees, when to feed, and which products give the best results.

Ideal Conditions for Growing Mango Trees

Climate: Best suited to tropical and subtropical climates but also grow well in warm temperate areas with minimal frost.
Sunlight: Choose a full sun location with good airflow.
Soil: Needs free-draining soil with a slightly acidic to neutral pH. Avoid heavy clay or compacted soils.
Spacing: Plant 4–6 metres apart depending on the variety and size of your space.

Young trees focus on foliage and root development for the first few years, then shift into flower and fruit production once established.

When to Fertilise Mango Trees in Australia

Feeding mango trees at the right time encourages flowering, reduces fruit drop, and improves size and sweetness.

Spring (September–October): Begin feeding as new shoots appear. Focus on nitrogen-rich fertilisers to boost leafy growth and flowering.
Summer (December–February): Light feedings support fruit development. Avoid overfeeding during peak heat.
Autumn (March–April): Apply a fruiting fertiliser to support late harvests and prepare for dormancy.
Winter (May–August): No feeding during this dormant period. Use mulch to regulate soil temperature and retain moisture.

When to Fertilise Mango Trees in Perth

Western Australia’s warm, dry climate means mango trees in Perth benefit from:

Spring: Fertilise in September and again in late October.
Summer: Fertilise lightly mid-season. Water deeply during heatwaves.
Autumn: One final feed in March to support fruit maturity.

How to Fertilise Mango Trees

Apply fertiliser in a wide ring around the drip line of the tree, not directly at the trunk.
Water in well after each application to activate nutrients.
Use a liquid feed monthly during active growth for faster uptake, especially in pots.

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What Is the Best Fertiliser for Mango Trees?

Mango trees need nitrogen early in the season for leaf growth, then shift to phosphorus and potassium to support flowering, fruit set, and fruit size. Calcium and magnesium are also important to prevent leaf curl and improve fruit quality.

NPK 20-20-20 – Use during the early growth phase for a balanced supply of all three key nutrients. Encourages lush foliage and strong branches.
NPK 4-18-38 + Cal-Mag – Ideal for flowering and fruiting phases. Improves fruit retention, flavour, and reduces nutrient stress in hot weather.

Complete Grow Mango Feeding Routine

Start with NPK 20-20-20 after winter to promote healthy foliage and flower initiation.
Switch to NPK 4-18-38 + Cal-Mag during fruit set to support mango development and flavour.

Explore our full fertiliser range to give your mango trees the nutrients they need for a fruitful, high-yielding season.