Silver birch
Betula pendula
White bark, a light airy canopy and a fast rate of growth, which is both the attraction and the warning. It is a superb tree and it is regularly planted in gardens far too small for it, where it reaches twenty metres, takes all the water and eventually has to come out.
- Position
- Full sun or Partial shade
- Water
- low demand
- Drainage
- Free-draining, Moisture-retentive
- Grows to
- 1200–2500 cm × 600–1000 cm
- Hardiness
- H7
- Flowers
- April and May
- Difficulty
- Straightforward
August
Prune
Silver birch’s year
Resolved for United Kingdom (general). Every window is stored against a climate event rather than a date, so a late frost pocket runs later than the band shows. What else August calls for.
| Activity | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant | January. | February. | March. | November. | December. | |||||||
| In flower | April. | May. | ||||||||||
| Prune | July. | August. |
Timing that travels
The band above resolves this plant's windows into months for one region. These are the windows themselves, stored against a climate event rather than a date — which is the form that survives being carried to a colder garden, a frost pocket, or next year.
Conditions it needs
- Light
- Full sun, Partial shade
- Frost
- Very hardy
- Hardiness rating
- H7 (RHS)
- Grows best at
- 6–24 °C
- Soil
- Sandy, Loam, Peat-free compost, Clay
- Soil pH
- 4.5–7
- Drainage
- Free-draining, Moisture-retentive
- Water needs
- low
- Drought
- moderate tolerance
- Waterlogging
- moderate tolerance
- Heat
- moderate tolerance
- Wind and exposure
- good tolerance
Where these figures come from
- LightSourced guidancemoderate confidence
- Royal Horticultural Society: Silver birch — position
Checked 2026-08-13
- FrostSourced guidancehigh confidence
- Royal Horticultural Society: Silver birch — hardiness
Checked 2026-08-13
- Hardiness ratingSourced guidancemoderate confidence
- Royal Horticultural Society: RHS hardiness ratings
Checked 2026-08-13
- Grows best atSourced guidancemoderate confidence
- Royal Horticultural Society: Silver birch — temperature
Checked 2026-08-13
- SoilSourced guidancemoderate confidence
- Royal Horticultural Society: Silver birch — soil
Checked 2026-08-13
- Soil pHSourced guidancemoderate confidence
- Plant Finder — Missouri Botanical Garden: Betula pendula — culture
Checked 2026-08-13
- DrainageSourced guidancemoderate confidence
- Royal Horticultural Society: Silver birch — soil
Checked 2026-08-13
- Water needsHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- DroughtHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- WaterloggingHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- HeatHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- Wind and exposureHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
On your soil
Computed by comparing this plant's recorded requirements against each soil's recorded characteristics. A recorded horticultural fact overrides the comparison where GrowingHQ holds one.
| Soil | Verdict | Why |
|---|---|---|
| Heavy clay | Works, with one condition | Silver birch will crop on heavy clay, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse. |
| Sandy | Prefers this soil | Sandy suits Silver birch as it stands: The pH suits it: it wants 4.5 to 7, and this soil is in that range. The free drainage is exactly what it wants. Sandy soil is among the soils it is recorded as suiting. |
| Chalky and alkaline | Works, with one condition | Silver birch will crop on chalky and alkaline, but one thing has to be dealt with first. The soil is substantially too alkaline for it: it wants pH 4.5 to 7, and this soil sits around 7.8 to 8.5.The pH is the obstacle. Small shifts are achievable and slow; large ones are not. On chalky and alkaline the dependable answer is a container of the right compost rather than an attempt to change the ground. |
| Loam | Prefers this soil | Loam suits Silver birch as it stands: The pH suits it: it wants 4.5 to 7, and this soil is in that range. The free drainage is exactly what it wants. Loam is among the soils it is recorded as suiting. The soil holds moisture, which saves a great deal of watering. |
| Silty | Prefers this soil | Silty suits Silver birch as it stands: The pH suits it: it wants 4.5 to 7, and this soil is in that range. The free drainage is exactly what it wants. The soil holds moisture, which saves a great deal of watering. |
| Peaty and acid | Works, with one condition | Silver birch will crop on peaty and acid, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse. |
| Shallow over rock | Prefers this soil | Shallow over rock suits Silver birch as it stands: The free drainage is exactly what it wants. Loam is among the soils it is recorded as suiting. |
| Made ground and urban soil | Works, with one condition | Silver birch will crop on made ground and urban soil, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse. |
Not sure which you have? Four hand tests will settle it.
Space and spacing
- Mature height
- 1200–2500 cm
- Mature spread
- 600–1000 cm
- Rooting depth
- 150 cm
- Spacing
- 700–1000 cm apart
Where these figures come from
- Mature heightHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- Mature spreadHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- Rooting depthHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- SpacingSourced guidancemoderate confidence
- Royal Horticultural Society: Silver birch — spacing
Checked 2026-08-13
In a container
- Minimum volume
- 90 litres or more
- Minimum depth
- 60 cm
Where the container figures come from
- Minimum volumeHorticultural consensusmoderate confidence
- Royal Horticultural Society: Betula — cultivation
Checked 2026-08-13
- Minimum depthHorticultural consensusmoderate confidence
- Royal Horticultural Society: Betula — cultivation
Checked 2026-08-13
A young tree only, and not a permanent one. A birch in a large container is a good plant for perhaps six or eight years and then a declining one that must go into the ground or be replaced — the roots are shallow, fibrous and greedy, and it dries out fast in summer once the pot is full. If you want the white bark on a patio, plan for that ending rather than being surprised by it.
Habit and ultimate size
What the plant becomes, rather than what it is when you buy it. The gap between the two is where most planting mistakes live.
- Foliage
- Deciduous
- In a container
- Container-grown while young, then needs the ground
Where these figures come from
- FoliageSourced guidancehigh confidence
- Royal Horticultural Society: Betula pendula — foliage
Checked 2026-08-13
- In a containerHorticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
- Growth rate
- Fast — over about 60 cm a year
- Ultimate height
- 1200–2500 cm
- Ultimate spread
- 600–1000 cm
- Time to reach it
- 25–40 yearsSourced guidance
Where these figures come from
- Growth rateSourced guidancemoderate confidence
- Royal Horticultural Society: Betula pendula — growth rate
Checked 2026-08-13
- Ultimate heightSourced guidancemoderate confidence
- Royal Horticultural Society: Betula pendula — ultimate height
Checked 2026-08-13
- Ultimate spreadSourced guidancemoderate confidence
- Royal Horticultural Society: Betula pendula — ultimate spread
Checked 2026-08-13
- Time to reach itSourced guidancelow confidence
- Royal Horticultural Society: Betula pendula — time to ultimate size
Checked 2026-08-13
source
Horticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
source
Horticultural consensusmoderate confidence
No external citation — see the evidence type above.
Checked 2026-08-13
Where and how you can grow it
Each way of growing is assessed separately, and “not assessed” is a real answer rather than a gap we have filled in with a guess.
| Method | Suitability | What it needs |
|---|---|---|
| Open ground | Well suitedsourceSourced guidancemoderate confidence
Checked 2026-08-13 | |
| Traditional dug bed | WorkablesourceSourced guidancemoderate confidence
Checked 2026-08-13 | |
| Raised bed | MarginalsourceSourced guidancemoderate confidence
Checked 2026-08-13 | A raised bed rarely holds enough soil volume for a tree beyond its first few years. |
| Container | MarginalsourceSourced guidancemoderate confidence
Checked 2026-08-13 |
Growing it
- PruningPrune only in late summer. Birch, like maple and walnut, bleeds copiously from cuts made in late winter and spring as the sap rises, and the flow does not stop until the tree is in full leaf. It is rarely fatal and it is alarming and entirely avoidable.
- PlantingThink hard before planting one within about two-thirds of its eventual height of a building, and think harder on shrinkable clay. Birch is fast, thirsty and shallow-rooting, and a mature specimen close to a house on clay is exactly the combination that leads to a subsidence claim. Where there is any doubt this is a question for a surveyor rather than a rule of thumb.
Where this guidance comes from
- PruningSourced guidancehigh confidence
- Royal Horticultural Society: Betula — pruning
Checked 2026-08-13
- PlantingSourced guidancemoderate confidence
- Royal Horticultural Society: Trees and buildings
Checked 2026-08-13
Safety and edibility
- Allergensensitised individualsBirch pollen is one of the principal causes of spring hay fever in northern Europe, and it also drives oral allergy syndrome — an itching mouth on eating apples, cherries, hazelnuts or stone fruit — through cross-reaction with related proteins.
source
Sourced guidancehigh confidence
- Royal Horticultural Society: Betula — pollen
Checked 2026-08-13
Anyone in the household with severe spring hay fever should consider a different tree; a mature birch beside a bedroom window is a large local pollen source in April.
Sources for this page
GrowingHQ editorial synthesis · Plant Finder · Royal Horticultural Society
Each figure on this page carries its own citation, under the “where these figures come from” note in its section. Record last reviewed 2026-08-14.