Domakihub How to Prune an Olive Tree the Right Way
Keep your olive trees healthy, shapely, and productive with a simple annual cut.
Reviewed by Domakihub garden pros · 2026-06-23 · 5 min read
Olive trees are one of the most forgiving plants you can grow in Greece, but neglect the pruning and you will end up with a tangled canopy, poor fruit set, and a tree that is hard to harvest or simply ugly to look at. The video above walks you through the technique on a real tree; this guide breaks the process into five clear steps you can follow on any property — garden home, holiday rental, or hotel terrace. Get this right once a year and your olives will reward you for decades.
Why olive trees need annual pruning
Olive trees produce fruit on the previous year's growth. If you never cut them back, new wood stops forming in the interior of the canopy and fruiting moves further and further out to the tips — making harvesting a ladder nightmare. Regular pruning resets this cycle, encourages fresh shoots from established wood, and keeps the tree at a manageable size.
For ornamental olives on terraces, courtyards, or poolside — common in Greek holiday rentals and hotels — pruning is equally important for shape. A well-structured olive becomes a statement feature. An unpruned one quickly looks wild and blocks light from adjacent areas.
When to prune in Greece
The ideal window in Greece is late February through April, after the coldest nights have passed but before the tree puts energy into new growth. Pruning during this window means wounds heal fast and new shoots emerge strongly in spring. A lighter tidy-up in autumn after harvest (October–November) is also acceptable and helps remove crossing branches while the structure is easy to see.
Avoid heavy pruning in summer when the tree is under heat stress, and never prune in a frost period — both weaken the tree and invite disease. In coastal areas of Greece where winters are mild, late January cuts are also fine.
How to prune an olive tree: 5 steps
- 1
Gather the right tools and sterilise them
You need sharp bypass secateurs for branches up to 2 cm, loppers for 2–5 cm branches, and a pruning saw for anything thicker. Clean every blade with methylated spirits or a diluted bleach solution before you start and again between trees. Olive knot (Pseudomonas savastanoi) spreads easily on dirty tools, and in Greece it is extremely common — one infected cut can ruin years of healthy growth.
- 2
Step back and read the tree's structure
Before making any cut, walk around the tree and identify its main scaffold branches — the two to five primary limbs that form the permanent skeleton. Everything you do should protect and enhance this skeleton. Look for the three Ds: dead wood, diseased wood, and damaged wood. These come out first and unconditionally. Then look for branches that cross and rub each other, and for shoots growing straight up (water shoots) or straight down.
- 3
Remove the three Ds and water shoots
Work from the inside of the canopy outward. Cut dead and diseased branches back to healthy wood — you will see green tissue once you are past the problem. Water shoots (vigorous vertical suckers often growing from the base or from large scaffold limbs) drain the tree's energy and rarely fruit; remove them at the point of origin, not just topped off. This single step often transforms the look of a neglected tree immediately.
- 4
Open the canopy to light and air
Olive trees need light penetration to the interior for fruit to set and to reduce fungal problems like olive leaf spot. As a rule of thumb, aim to remove roughly 20–30% of the live canopy in any one year. Prioritise branches growing toward the centre of the tree, any branch crossing another, and the weakest of any two branches competing for the same space. Stand back regularly and check your progress — it is easy to over-cut once you start.
- 5
Make clean cuts and clear the debris
Cut just outside the branch collar (the slightly swollen ring where the branch meets its parent limb) — never flush with the trunk and never leaving a long stub. The collar contains the tissue that seals the wound. For cuts wider than 3 cm on valuable specimen trees, applying a wound sealant is optional but worth doing in humid coastal areas to slow fungal entry. Collect all prunings immediately: diseased material should be bagged and binned, healthy wood can be chipped for mulch or dried for the barbecue — a classic Greek bonus.
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FAQ
- How much can I cut off an olive tree in one go?
- As a general rule remove no more than 25–30% of the live canopy in a single pruning session. Taking more than a third in one year causes stress, can trigger excessive water-shoot regrowth, and delays fruiting recovery by two or more seasons. If a tree is severely overgrown, spread the renovation over two or three years rather than trying to fix everything at once.
- Can I prune an olive tree in summer in Greece?
- Light cosmetic tidying — removing a crossing branch or a dead twig — is fine in summer. Heavy structural pruning during July and August is not recommended in Greece. The combination of heat stress and open wounds invites fungal and bacterial infections, and the tree has fewer resources to close cuts quickly. Stick to the main pruning window of February to April for any significant work.
- Do olive trees in pots or on terraces need the same pruning as ground-planted ones?
- Yes, the principles are identical, but pot-grown and terrace olives typically need more frequent attention to keep them in proportion with their container and surrounding space. Because pot-grown trees can't chase nutrients through deep soil, you may want to be slightly more conservative — removing closer to 20% rather than 30% — to avoid overstressing the root system at the same time as the canopy.