Step one: decide what you are trying to achieve
Before a single cut, work out whether you want clearance, light, shape or safety. Most poor trimming happens because someone started cutting and made the plan up as they went.
Walk around the tree. Look at it from the house, from the street and from underneath. Pick the two or three branches that are actually causing the problem. Very often that is the entire job.
Step two: check what you are dealing with
Identify the species if you can, because some react badly to hard cuts - conifers in particular will not regrow from bare wood. Check the base for fungal brackets and the unions for cracks, both of which are jobs for an arborist rather than a weekend.
And on the Sunshine Coast, check whether the tree is protected. Local vegetation rules cover pruning as well as removal in some circumstances.
Step three: get the tools right
Bypass secateurs to 20mm. Loppers to 40mm. A pull-stroke pruning saw beyond that. A pole pruner for anything just out of reach - far safer than a ladder. Sharpen everything before you start.
Eye protection and gloves at minimum. Deadwood comes down without warning.
Step four: take the dead material first
Dead, damaged and diseased wood comes off before anything else. It is the highest-value work, it does not count against your quarter-of-the-canopy budget, and once it is gone the tree often looks like what you wanted anyway.
Step five: cut in the right place
Remove a branch just outside the branch collar - the swollen ring where it meets the stem. Not flush against the trunk, not leaving a stub.
To shorten a branch rather than remove it, cut back to a living side branch at least a third the diameter of what you are removing. That side branch becomes the new tip.
On anything heavy enough to tear, use three cuts: undercut, top cut further out to drop the weight, then the final cut at the collar. The technique in full.
Step six: step back often
Cut two or three branches, then walk away and look at the tree from a distance. Canopies are impossible to judge from directly underneath, and this is where people overshoot.
Stop when you have solved the problem you identified in step one. Resist tidying.
Step seven: aftercare
No wound paint - it does not help and can trap moisture. Water the tree well if conditions are dry, since it has just lost leaf area it was using. Mulch out to the drip line, keeping it clear of the trunk. Do not fertilise a freshly pruned stressed tree; feeding is a separate decision.
Where to stop
If the branch is above your shoulder, over a structure, near a power line, or thick enough that you are thinking about a ladder - that is the line. Ring (07) 5408 6029 instead, or read about professional pruning work.
Frequently asked questions
What size tree can I safely trim myself?
One you can work on with both feet on the ground, using hand tools or a pole pruner. As soon as a ladder, a chainsaw above shoulder height or a rope is involved, the injury risk rises sharply and most home insurance will not cover the outcome. That is the point to stop.
How much should I take off?
No more than about a quarter of the live canopy in one season on an established tree, and less on a mature or stressed one. It is far better to take a little each year than a lot every five years - the tree recovers between visits rather than being repeatedly set back.
Do I need to disinfect my tools?
Between trees, yes, if you are cutting anything showing disease. A wipe with methylated spirits or a dilute bleach solution between plants is enough. Within a single healthy tree it makes no practical difference.
What do I do with the offcuts?
Small material can be shredded and used as mulch, kept away from the trunk. Anything diseased should go to green waste rather than onto your own garden. On the Sunshine Coast, do not dump vegetation in a creek line or reserve - it spreads weeds and it is an offence.