Yes — within limits that are worth understanding before you get quotes, because the gap between what people hope for and what is achievable is where most disappointment in tree work comes from.
What is actually achievable
A sensible crown reduction takes around a quarter to a third of the crown on a healthy broadleaf, and less on an older tree. On a 40ft tree that is perhaps eight to twelve feet off the height, with the spread coming in proportionally.
Why the limit exists
It is not caution for its own sake. A tree's leaves are how it feeds itself, so removing a large proportion of the canopy in one operation is a genuine shock to it. The tree responds the way trees do — by growing vigorously to replace what it lost.
So a heavy reduction produces a dense flush of fast, weakly attached regrowth. Within three or four years the tree is close to its old size, worse shaped, and structurally less sound than before. You have paid for a problem that returns.
A moderate reduction does not provoke that response. The tree carries on, seals its wounds, and holds the new size for three to five years.
Which is why staging works better on a big tree
Where a large tree genuinely needs to come down substantially in size, doing it across two operations several years apart gets you further in total than one heavy cut — and leaves a better-looking tree.
Try the cheaper options first
Before committing to a reduction, it is worth checking whether it is actually the size that is the problem. Very often it is not.
| What's really wrong | What fixes it | Versus reduction |
|---|---|---|
| Can't use the ground beneath | Crown lift | Far cheaper |
| Too dark underneath or in a room | Crown thin | Cheaper; no size change |
| Deadwood dropping | Deadwooding | Cheapest of all |
| One limb over a building | Targeted pruning | Much cheaper |
| The tree looms over everything | Crown reduction | — |
Only the last row is genuinely a size problem. The others are position or density problems that people describe as size because the tree looks big.
Conifers are a different case
If the large tree is a conifer — Leylandii, Lawson, spruce, pine, fir — the limit is not a percentage but a physical one. These do not regrow from bare brown wood, so the reduction can only go as far as the live green extends. Yew is the exception and does reshoot from old wood.
Push a hand into the foliage in several places and find how deep the green goes. That measurement is the limit, whatever figure you had in mind. And a conifer reduced substantially looks clipped rather than natural, because there are far fewer usable growth points to cut back to — worth knowing before you commit.
How often it will need doing
The question worth asking at quotation, because it turns a price into a running cost. A sensible reduction on a healthy broadleaf typically holds three to five years. Vigorous species come back faster.
If a 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. Sometimes the honest conclusion is that a forest tree has been planted in a garden — and that is a legitimate thing to conclude, provided it is reached deliberately.
Before you plan around any of it
A tree in Moreton-in-Marsh's conservation area needs six weeks' written notice to Cotswold District Council, and a tree with a Tree Preservation Order needs written consent at any size. A reduction notice on a sound tree usually passes without comment, which is another argument for proposing what you actually need rather than removal.
Want a big tree brought down in size?
Tell us roughly how tall it is and what you want to change. We'll tell you what can realistically be achieved.
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