Most trees that look dangerous only need cutting back. A tree usually only has to come down when it is dead, when the trunk is split or hollow, or when the roots have lifted. An ISA-certified arborist can tell which it is by looking at the trunk and the base of the tree.
- Most trees can be saved. Dead branches and a dense crown are pruning jobs.
- Four signs mean removal. Split trunk, hollow base, new lean, no leaves at all.
- A new lean is the urgent one. Lifted soil on one side means a root problem.
- Approval can apply. Larger trees and conservation areas need NParks clearance.
- A photo is usually enough for an arborist to tell you which job it is.
People usually call us after a storm, or after a branch has come down on a car. The first question is almost always whether the whole tree has to go. Most of the time it does not.
This post covers what to look for, and when it is worth getting someone to check it properly.
What does pruning actually do?
Pruning takes weight off the parts of a tree most likely to fail, and it takes out branches that are already dead. It is not tidying.
A tree carries its own weight fine until something changes. A limb dies. Wind gets into a crown that has grown too dense. A branch grows out over a driveway and gets long enough that its own weight becomes the problem. Pruning fixes all three without touching the healthy structure.
That is why a tree that looks frightening is often a small job. The danger is usually in a few branches, not the whole tree.
It also buys time. A tree that is sound but overgrown gets years back from one good prune, and the same tree left alone drops the limb it was always going to drop. In this climate that gap is short. Trees here put on growth all year round, so a crown that was comfortable two years ago can be carrying a lot more weight than you think.
Which signs mean a tree can be saved?
These are the ones we see most often, and none of them means the tree has to come down.
- Dead branches in an otherwise green crown. Common and normal.
- Branches growing over a roof, a wall or a road.
- A crown that has grown dense enough to catch the wind.
- A tree that has simply got too tall for where it sits.
- Storm damage to one or two limbs, with the trunk still sound.
What these have in common is that the trunk and the roots are still doing their job. The problem is in the branches, and branches can be taken off and regrown. Once you know that, most of the panic goes out of the situation.
Which signs mean a tree has to come down?
These are the ones worth acting on quickly.
- The trunk is split, or you can push a screwdriver into soft rotten wood.
- A large hollow at the base, or fungus growing out of the trunk.
- The whole tree has started to lean, and the soil on one side has lifted.
- No leaves at all through a growing season, and the twigs snap dry.
- Roots have been cut through by works nearby.
The one to take seriously is the lean with lifted soil. A tree that has always leaned is usually fine. A tree that has recently started to lean, with the ground cracking on the opposite side, has a root problem and can fail without warning.
Fungus at the base is the one people miss. Bracket fungus growing out of the trunk or the root flare is feeding on wood that used to be structural, and by the time it fruits on the outside the decay inside is well along. The crown can still look perfectly green while that is happening, which is why a healthy top is not proof of a healthy tree.
What does an arborist check on a site visit?
The base of the tree first, then the trunk, then the crown. The order matters, because a fault at the bottom decides the answer no matter what the top looks like.
Here is what gets looked at.
- The root plate. Lifted soil, cracks in the ground, roots cut by nearby works, or paving that has been laid over the root zone.
- The trunk and the root flare. Splits, cavities, soft wood, bleeding, and any fungus growing out of it.
- The union points. Where two big limbs meet the trunk. A tight fork with bark trapped inside it is a common failure point in a big tree.
- The crown. Deadwood, the density of the canopy, and whether the weight is spread evenly or all out on one side.
- What sits underneath. A carpark, a walkway, a boundary wall or a service line changes how a job has to be done, and sometimes whether it can be done at all.
That last one surprises people. Two identical trees get two different answers because of what is beneath them.
What if the tree is only too big?
Then it gets cut back rather than removed. There are two ways to do it and they are not the same job, so it is worth knowing which one you are being quoted for. We wrote about the difference in pollarding and crown reduction.
Do you need approval to remove a tree in Singapore?
Sometimes. It depends on where the tree is and how big it is. Trees in conservation areas and larger trees on private land can need approval from NParks first. Trees on public land are not yours to cut at all.
This is worth checking before you agree a price, not after. Approval takes time, and a contractor who starts cutting without it creates a problem that costs more than the tree work did.
Crystalene is an NParks approved contractor. Send us a photo and tell us where the tree is, and we will tell you what applies before anyone starts cutting.
What happens after the tree comes down?
The stump and the waste are part of the job, and they are worth agreeing up front. A removal that stops at ground level leaves you with a stump, a root system and a pile of timber to deal with.
Ask three things. Whether the stump is being ground out or left. Whether all the cut material is being carted away. And what happens to the space afterwards.
That last question is the one people forget. A mature tree leaves a hole in a garden that is more obvious than they expect, and the ground under it has been in shade for years. If something is going back in, it is easier to plan the replanting while the crew and the access are already there.
How do you get a tree checked?
Send a photo on WhatsApp. Stand back far enough to get the whole tree in, and take a second picture of the base of the trunk. That is usually enough for our arborists to tell you whether it is a pruning job or a removal.
If a tree has already come down, or a trunk has split, call instead. That is a safety problem before it is a landscaping job and it is much faster to sort out on the phone.
Frequently asked questions
How do I know if my tree is dying?
Look at the twigs and the trunk, not the leaves. Snap a few thin twigs at the end of a branch. Live wood bends and shows green underneath. Dead wood snaps dry and is brown all the way through. Then check the trunk and the base for soft wood, splits or fungus. A tree with dry twigs across the whole crown and soft wood at the base is finished. Patchy deadwood on one side usually is not.
Can a leaning tree be saved?
Often, yes. A tree that has leaned for years and has straight growth coming off the lean has usually grown that way and is stable. The dangerous case is a lean that is new. If the soil on the opposite side is lifted or cracked, the root plate is moving and the tree can fail with no further warning. Treat a new lean as urgent and keep people and cars away from it until it has been looked at.
How often should a tree be pruned in Singapore?
Most garden trees benefit from a check every one to three years, and fast growers need it more often than that. The climate here means growth does not stop for a winter, so trees put on weight all year. Rather than fixing an interval, look at the tree. Deadwood in the crown, branches touching a roof or a wire, or a canopy so dense you cannot see through it are all signs it is time.
Do I need NParks approval to cut a tree on my own land?
Sometimes. It depends on the size of the tree and where the land sits, and trees in conservation areas are treated differently from the rest. Trees on public land are not yours to cut at all. Check before you book the work, because approval takes time and cutting first creates a bigger problem than the tree did. Crystalene is an NParks approved contractor and can tell you what applies to your tree.
Is pruning cheaper than removing a tree?
Usually, yes. Removal is the bigger piece of work. The whole tree has to come down in controlled sections, and everything that comes down has to be carted away, so there is more labour and far more waste. Pruning touches part of the tree and leaves the structure standing. Price is not the main reason to prune though. Most trees that look dangerous do not need removing in the first place.
A branch has already fallen. What should I do?
Keep people and cars away from the area first, then call rather than message. A branch that has come down means something changed in that tree, and what is still up there matters more than what is on the ground. Do not let anyone climb it or cut into it to clear the way. If the fallen limb is blocking a road or sitting on a car, say so when you call, because that moves the job up the list.
