Best Fertiliser for Avocado Trees | Feeding Guide

Avocado trees require balanced nutrition to maintain healthy growth and consistent fruit production. While water and pruning are important, fertilisation is the key factor that influences yield, leaf health, and fruit quality. Choosing the best fertiliser ensures your avocado tree develops strong roots and branches while producing reliable harvests.

Why Avocado Trees Need Fertiliser

Avocado trees are heavy feeders with shallow root systems that benefit from consistent nutrition. Fertiliser replenishes soil nutrients that are quickly depleted as the tree grows. Without regular feeding, trees may suffer from yellowing leaves, poor fruit set, and reduced growth.

Nitrogen (N): Essential for leaf and shoot growth.
Phosphorus (P): Supports root development and flower production.
Potassium (K): Improves fruit quality and overall plant strength.
Calcium & Magnesium: Critical for cell structure and fruit development.

Tip: Fertilising young avocado trees encourages strong growth, while mature trees need balanced feeding to support fruiting cycles.

482538488_18491875438034734_5651672367799318253_n (1)

492296866_1501447711189171_990834473433373557_n (1)

Seasonal Feeding Schedule

Fertilising avocado trees at the right time ensures steady growth and abundant harvests. Their nutritional needs change throughout the year, especially between active growth and fruiting phases.

Young Trees (1–3 years)

Apply a nitrogen-rich fertiliser every 6–8 weeks to encourage foliage and branch growth.
Use liquid feeds for faster absorption and to avoid nutrient loss in shallow root zones.
Always water thoroughly before and after fertilising to protect roots.

Mature Trees (4+ years)

Spring: Apply balanced NPK fertiliser to support flowering and fruit set.
Summer: Continue feeding to maintain fruit development and healthy canopy growth.
Autumn: Reduce fertiliser to prepare trees for dormancy.
Winter: Avoid heavy feeding as growth slows.

Tip: Over-fertilising can cause excessive leaf growth at the expense of fruit production. Apply moderate, regular feeds instead of large doses.

For convenience and reliability, many growers use CompleteGrow 20L All Purpose NPK Liquid Plant Food. Its balanced formulation supports both young and mature trees, ensuring strong roots, healthy foliage, and productive harvests.

449067459_3791865261099147_62864456178508598_n (1)

Common Questions About Avocado Fertilisation

Correct fertilisation eliminates many of the problems that affect avocado trees. Below are answers to the most common grower questions.

What is the best fertiliser for avocado trees? A balanced fertiliser with nitrogen, phosphorus, potassium, and trace elements is ideal. Liquid formulations such as CompleteGrow All Purpose NPK ensure fast uptake and reduce the risk of nutrient lockout.

How often should avocado trees be fertilised? Young trees should be fed every 6–8 weeks, while mature trees should be fertilised three times per year: spring, summer, and autumn.

Can I use general-purpose fertiliser on avocados? Not recommended. Many general fertilisers are too strong or unbalanced, leading to salt build-up or poor fruit quality. Use a balanced NPK fertiliser designed for long-term plant health.

When should I fertilise avocado trees? The best times are early spring before flowering, mid-summer during fruit growth, and early autumn to strengthen the tree before winter.

By following a consistent feeding schedule and using the right fertiliser, avocado trees will remain vigorous and highly productive, delivering healthy, flavourful fruit season after season.