Reduction is the most requested job in tree surgery and the one where quotes diverge most. When they do, it is usually because two contractors are quoting genuinely different work — and the difference does not show up on the paperwork.
Where the tree decides and where you do
It helps to be clear about the division of labour, because it explains why a good contractor will push back on some instructions and not others.
| You decide | The tree decides |
|---|---|
| What outcome you want | Where each cut can be made |
| Which side matters most | How much can come off in one go |
| How long you want it to hold | How fast it grows back |
| Whether it is worth doing at all | Whether the shape will survive it |
Give the left-hand column instead. "Clear of the shed roof." "Light back on that side by mid-afternoon." "Five years before it needs doing again." All three are things you know and the contractor does not, and all three produce a better result than a number.
The topping question, and how to ask it
If one quote comes in noticeably under the others, the likeliest explanation is not efficiency. Topping — cutting to a uniform length regardless of growth points — is considerably quicker than working out where each cut should land, and it looks identical on a quotation.
The difference shows up three or four years later, when the stubs have failed to seal, decay has entered the cut ends, and the tree has thrown out a mass of shoots attached to the outside of dying wood. At that stage it is bigger, denser and structurally weaker than before the work.
The question that separates the two takes ten seconds: how will the cuts be made? A contractor who reduces trees properly will talk about growth points and side branches. One who does not will talk about heights.
What you are paying for
- How much comes off, which the tree sets rather than you — a quarter to a third of the crown on a healthy broadleaf, less on an older one.
- Height and spread, which set the crew and the climbing time.
- Access, including whether the ground will take a vehicle.
- What is beneath, which decides whether sections drop or are roped.
- Species. Dense hardwood is slower and heavier.
- Waste volume, which on a reduction is substantial.
Conifers have a hard limit
Almost every conifer — Leylandii, Lawson, spruce, pine, fir — will not regrow from bare brown wood. Cut past the green and it stays brown permanently. Yew is the exception and does reshoot from old wood.
So before agreeing a reduction on a conifer, push a hand into the foliage and find how deep the green goes. That measurement is the limit of what can be achieved, whatever figure you had in mind. And a heavily reduced conifer looks clipped rather than natural, because there are far fewer usable growth points — worth knowing before you commit.
How long it lasts
Worth asking, because it turns a price into a running cost. A well-judged reduction on a healthy broadleaf typically holds three to five years. A hard reduction on a vigorous species can be back within two, because the tree answers heavy cutting with heavy growth.
If the tree is going to need reducing every four years for the next thirty, that is worth knowing when deciding whether it is the right tree for the position at all.
Permission
Reduction is work to the tree like any other. A tree in Upton's conservation area needs six weeks' written notice to Malvern Hills District Council, and a TPO tree needs written consent at any size. A reduction notice on a sound tree usually passes without comment, but the six weeks still has to elapse.
Thinking about reducing a tree?
Tell us roughly how tall it is and what you want to change about it. We'll arrange a free quotation.
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