Pruning Olive tree
When and how — Olea europaea
Prune your olive tree in January and February — the optimal month is usually February.
The next pruning window is January next year.
When to prune?
The tree olive tree is pruned in January and February.
Prune trees for structure and health, not productivity.
Tree pruning is almost always about crown shape and health, not flowering or fruit. Good tree pruning starts in the first ten years: you set the framework with three to five strong scaffold branches that leave the trunk at an open 45–60° angle. After that, prune mainly to remove dead, diseased or crossing wood. Heavy renovation pruning later in life triggers masses of watershoots and weakens the tree — better to do light corrective pruning every two or three years than one drastic intervention per decade. Timing follows the sap flow: deciduous trees during winter dormancy (December to February, except birch and walnut which 'bleed'), conifers any time of year except during frost.
How to prune olive tree
Prune olive trees in January or February, during their dormant period when the risk of frost is lower and before new growth begins in spring. Pruning at this time minimises sap loss and stress. Use clean, sharp secateurs for smaller branches and a pruning saw for anything thicker than your thumb. The main goal is to maintain an open, vase-shaped canopy that allows light and air into the centre of the tree. This reduces disease pressure and encourages fruiting wood. Start by removing any dead, damaged, or crossing branches. Then take out any shoots growing inward toward the centre or straight up (water shoots), as these crowd the canopy and rarely produce fruit. Aim to create a framework of three to five main branches radiating outward. Olive trees fruit on one-year-old wood, so avoid heavy pruning of the previous season's growth if you want a crop. Light annual pruning is better than severe cuts every few years. If your tree has become overgrown or neglected, you can renovate it more drastically, but spread the work over two or three winters to avoid shocking the plant. In containers, keep the canopy compact by shortening vigorous shoots by about a third each winter. Remove any suckers that emerge from the base or root ball promptly. Olive trees tolerate hard pruning and will regenerate from old wood if necessary, but regular, moderate pruning keeps them healthy and productive without the need for drastic intervention.
Common mistakes
✗ Cutting flush to the trunk
Remove branches just outside the branch collar (the swelling at the base), not flush to the trunk. The collar contains the cells that seal the wound — cut those off and the wound won't heal, giving rot a clear path in.
✗ Topping to limit height
Drastically shortening the leader triggers massive watershoot growth and permanently weakens the tree. Want a smaller tree? Choose a smaller species at planting time, or replace the tree.
✗ Painting wounds with sealant
Once standard, now outdated: wound paint traps moisture and actually encourages rot. A clean cut at the right moment heals on its own.
Too late this year? Here's what to do
Better to wait than prune at the wrong moment. The next optimal window is January next year. Until then: leave the plant alone — only remove dead or diseased wood (which you can do year-round).
