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How to plant an ornamental tree

Updated: October 2026

A young pot has just arrived, somewhere between a 10 cm bay and a 20–30 cm cherry, and you need to know whether to plant it this weekend, how deep the stem goes, and what a leafless twig means. This is how to plant an ornamental tree when the plant is a mail-order youngster rather than a tree you inspected at a garden centre. The [hardy ornamental trees comparison](/hub/trees-and-palms/hardy-ornamental-trees) ranks the seven plants. Products Compared used RHS planting guidance and the UK review themes, dated 16 October 2026, and did not plant the trees. A qualifying purchase can earn us a commission at no extra cost to you.

A young pot has just arrived, somewhere between a 10 cm bay and a 20–30 cm cherry, and you need to know whether to plant it this weekend, how deep the stem goes, and what a leafless twig means.

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Carbeth Plants Carbeth bay (Laurus nobilis)

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Carbeth Plants Carbeth bay (Laurus nobilis)
5.6/10about £11.99
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Carbeth Plants Carbeth Prunus Brilliant

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Carbeth Plants Carbeth Prunus Brilliant
4.7/10about £9.79
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Carbeth Plants Carbeth red acer Atropurpureum

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Carbeth Plants Carbeth red acer Atropurpureum
4.4/10about £13.99
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On this page
  1. 1.Look at the plant before it goes in the ground
  2. 2.Plant in the easier months if the soil allows
  3. 3.Water, mulch, and stake only if it needs it
  4. 4.A twig, a scorch, or a tree that is already large

Look at the plant before it goes in the ground

Open the box on the day it arrives and look at roots and stem before you dig. The RHS mail-order advice is to plant soon, and not to accept a root ball that is dust-dry or roots that circle the stem when you can see them. These parcels are container youngsters, so you should see compost, not naked roots. Water a dry pot, then check that the roots are not a solid mat. A stem that snaps dry is a different problem from a deciduous twig that is simply leafless. UK reviews on the acer and the cherry already describe twigs and plants that died after planting. Photograph a mushy or snapped plant and tell the seller promptly. The Consumer Rights Act 2015, section 9, is the satisfactory-quality rule. It is not a promise from this page that a refund will be granted. A plant smaller than the mature photograph is what £9.79–£14.50 buys here.

Plant in the easier months if the soil allows

The RHS planting guidance treats October to April as the easier window, and it tells you to avoid soil that is waterlogged or frozen. Container-grown plants can go in at other times, including summer, but they need more water while they root. None of these seven is a field-grown standard. The acer’s listing even names autumn as the planting period. If the ground is sodden in January, hold the pot somewhere sheltered and frost-managed rather than digging a sump. Set the plant at the same depth it was growing in the pot, so the stem is not buried and the root flare is not left proud and drying. A 10 cm bay buried to the first leaves, or a cherry stem sunk so the compost sits in a hollow that floods, is the mistake these small pots make easy. Firm the soil so the pot-shaped root ball is in contact with the ground, and water once so the soil settles around it.
Carbeth Plants Carbeth bay (Laurus nobilis)

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Carbeth Plants Carbeth bay (Laurus nobilis)
5.6/10about £11.99
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Water, mulch, and stake only if it needs it

In dry weather the RHS cites a typical figure of about 30–50 litres per square metre per week while a new tree is establishing. That is guidance for the soil around the plant, not a measurement we took on these seedlings. Mulch about 5–8 cm deep and keep it off the trunk. Bay in particular dislikes a permanently wet pot. A 10 cm bay or a 30 cm ornamental is not top-heavy, so stake only if the site is exposed or the root ball rocks, and take the stake off after about two growing seasons.

A twig, a scorch, or a tree that is already large

A deciduous acer or cherry can arrive in winter with no leaves and still be dormant. A pliable stem and a moist root ball are reasons to wait for bud break. A brittle stem, with dry compost and no give, matches the reviews that describe a weak plant rather than a sleeping one. Brown bay leaves in the UK sample included sun and wind scorch. Do not name a disease from a brown edge. Xylella is not known in the UK. A seedling in a carton is not a tree under a Tree Preservation Order. There is no single distance from a wall that fits every soil, which is why the pine’s 15–30 m claim belongs on ornamental trees for small gardens.

Common questions

How deep does the stem go?
Plant at the same depth as the compost in the pot. The stem should not disappear into the hole, and the top of the root ball should not sit proud so that it dries out. On a 10 cm bay that is a shallow hole. Burying the stem, or leaving a bowl that holds water against the bark, is the failure these small pots invite.
Does a 30 cm tree need a stake?
Often no. The RHS says small trees frequently stand without a stake, and a 20–30 cm cherry or a 10 cm bay is not top-heavy. Use a 45-degree stake if the site is windy or the root ball rocks, with a soft tie and a spacer. Remove it after about two growing seasons.
How often do I water in the first summer?
Keep the root zone moist, especially in a dry spell and if you planted outside autumn and winter. The RHS typical figure is about 30–50 litres per square metre per week in dry weather. That is a guide for the soil, not a timer for a seedling. Mulch 5–8 cm, kept off the trunk, slows the drying.
The acer has no leaves. Is it dead?
Not by default. A deciduous maple can be dormant and leafless in the dormant season. Check for a pliable stem and a moist root ball before you decide. A snap-dry stem, dust-dry compost, or a plant that was mushy in the box is the case to photograph and report. UK reviews do include plants that died after planting, so watch bud break rather than assuming either way.
The bay leaves are brown. What do I check?
Check sun and wind scorch, which one UK review reported on arrival, and check whether the compost is waterlogged, because bay rots in a wet pot. A brown edge is not a named disease. Do not diagnose Xylella from this page. If the plant is dead or badly damaged against the description, tell the seller promptly.
When do I stop and call the council or a surgeon?
Call the council before work on a tree that may have a Tree Preservation Order or stand in a conservation area. Call a surgeon for a large leaning tree or a crown in a power line. Contact APHA if you suspect a notifiable pest. Planting one of these posted youngsters is not that job.

Related pages

Hardy ornamental trees buying guide

Best hardy ornamental trees

Hardy ornamental trees

Japanese maple or flowering cherry: leaf or blossom

Ornamental trees for small gardens and the courtyard

Sources

Public UK sources, last checked on 16 October 2026. Shelf prices and star lines are the amazon.co.uk figures checked that day. Mature sizes and H ratings are RHS species guidance unless a seller estimate is named. They are not a trial of these seedlings.

  1. RHS: trees for smaller gardens (retrieved 16 October 2026)
  2. RHS: hardiness ratings (retrieved 16 October 2026)
  3. RHS: Acer palmatum (retrieved 16 October 2026)
  4. RHS: bay tree growing guide (retrieved 16 October 2026)
  5. RHS: buying trees and shrubs (retrieved 16 October 2026)
  6. GOV.UK: Tree Preservation Orders and conservation areas (retrieved 16 October 2026)
  7. Forest Research: trees around buildings (retrieved 16 October 2026)
  8. Consumer Rights Act 2015, section 9 (retrieved 16 October 2026)