Mango Trees in August: Pruning, Fertilisation and the Next Harvest

For many mango trees, August is a crucial period, although the right care depends on the region and the tree’s growth stage. Across much of Brazil, trees may be undergoing floral induction, flowering or beginning to set fruit. At this point, heavy pruning and excessive nitrogen fertiliser can damage production. It is best to assess the canopy, protect the flowers, provide balanced nutrition and postpone renewal pruning until after harvest.

Why is August an important month for mango production?

Cooler, drier spells can slow vegetative growth and encourage natural flowering in mango trees. In Brazil’s north-eastern Semi-arid region, for instance, natural flowering can be particularly intense from June to August. In other areas, timings differ according to temperatures, rainfall, cultivar and growing conditions.

Therefore, a tree carrying many flower panicles in August is already determining part of its next harvest. At this stage, the aim is not to encourage a surge of new leaves, but to maintain the productive structure and limit factors that can reduce fruit set.

• Check whether the canopy has flowers or newly emerging panicles;
• Avoid severe pruning while the tree is flowering;
• Do not overuse nitrogen-rich fertilisers;
• Keep the soil covered, but do not allow organic material to touch the trunk;
• Monitor flowers for pests and diseases.

Should a mango tree be pruned in August?

If it is flowering or setting fruit, August is generally not the right time for intensive production pruning. This work is usually carried out after harvesting, removing dry, diseased and poorly positioned branches, as well as parts that make the canopy overly tall or dense. Post-harvest pruning also promotes new shoots, which will develop into the branches needed for the following production cycle.

What should fertilisation be like before the next harvest?

The appropriate amount depends on the soil, the size of the tree and the nutrients already available to it. An established mango tree should not simply be given large quantities of fertiliser because flowering is approaching. Too much nitrogen can encourage vegetative growth when the intention is to support mature, productive branches.

More precise management is based on soil testing and, in technically managed orchards, leaf analysis. Potassium, nitrogen, phosphorus, calcium, magnesium and micronutrients all contribute to plant development, but they must be supplied in balance.

• Avoid applying excessive fertiliser without knowing what the soil requires;
• Where appropriate, spread fertiliser beneath the canopy’s drip line;
• Do not place fertiliser close to the trunk;
• Use well-rotted organic matter where it forms part of the management plan;
• Prioritise balanced nutrition rather than programmes aimed solely at flowering.

Is it necessary to increase watering when flowers and small fruits appear?

Water requirements change throughout the growing cycle. A drier period can contribute to floral induction, but severe water shortage after flowering and during fruit set and development can reduce production. In home gardens, the best guide is to monitor the soil, rainfall and the tree’s condition, maintaining suitable moisture without leaving the roots continually waterlogged.

Preparing the next mango harvest begins immediately after picking

The most common mistake is to assume that the number of mangoes is decided only when flowers appear. After harvest, the mango tree must produce new branches, restore its reserves and build the structure that will later mature and undergo floral induction. This is the period when production pruning, appropriate fertilisation and canopy maintenance become most important for the next cycle.

In August, then, there is no single action that suits every Brazilian mango tree. If the tree is already flowering, protecting its panicles, avoiding heavy pruning and maintaining balanced water and nutrients matter more than trying to stimulate new shoots. Once harvesting is complete, the real structural preparation for the next crop begins, with controlled canopy renewal and the development of branches able to flower in the following cycle.