Watering fruit trees: how much and how often
How much and how often to water fruit trees, where to put the water, the times it matters most, and signs a tree is getting too much or too little.
Water is the single biggest factor in fruit size and quality. Too little and fruit stays small or drops; too much and roots rot. The goal is simple: keep the root zone moist, not soaked, especially at the times that matter most.
Water deeply, not often
A long, slow soak that wets the soil 40 to 60 cm down encourages roots to grow deep, where the soil stays cooler and moister. Frequent light sprinkles keep roots near the surface, where they dry out and cook on hot days.
As a rough guide, an established tree in warm weather may need 50 to 100 litres a week or more, depending on its size, your soil and the weather. Young trees need less in total but more often, because their roots are small.
Water where the roots are
The feeding roots of a fruit tree spread out to the edge of the canopy and beyond, not around the trunk. Run drippers or a soaker hose in a ring under the outer canopy, and move it outwards as the tree grows.
Check the soil, not the calendar
Dig down with a trowel or push a finger into the soil under the canopy. If it is dry 10 cm down, it is time to water. Sandy soils dry fast and need water more often; clay holds water longer but is slow to soak.
When water matters most
- Flowering and fruit set: dry stress can cause flowers and tiny fruit to drop.
- Fruit swell: the weeks before harvest, when fruit gains most of its size.
- Heatwaves: water deeply the day before hot weather arrives, not during the heat of the day.
- After harvest: trees are setting next year's buds, so don't stop watering just because the fruit is picked.
Signs of too much or too little
- Too little: wilting in the afternoon that doesn't recover overnight, leaf curl, yellowing older leaves, small fruit, fruit drop.
- Too much: yellowing leaves while the soil is wet, a sour smell, gum or dark staining at the base of the trunk.
Mulch saves water
A layer of coarse mulch slows evaporation, keeps soil cooler and feeds soil life as it breaks down. Keep it clear of the trunk.
Keeping an eye on the weather makes watering easier. Trees n Bees fills in daily rainfall for your property beside your own rain gauge readings, can send a dry spell or hot day alert to your phone, and shows how many days of water are left in your tanks.