Shrubs, trees and climbers

Viburnum

ViburnumAdoxaceae
Also: Laurustinus, Guelder rose, Japanese snowball
Laurustinus

Laurustinus

Water well through the first two summers; established plants are quite drought-tolerant.

Part shade Water: average H4down to −10 °C 2–3 m tall · 2–3 m wide In a pot: yes
Flowering · UK
Flowering · Northern Italy
Flowering · Central Italy
Flowering · Southern Italy and islands

Care

Light

Standard viburnum siting.

Water

Once established.

Soil

Adaptable, well-drained soil of most types.

Pruning

Trim to shape after flowering; can be pruned harder if needed to renovate, and tolerates this well.

Feeding

A general feed over a mulch in spring on poor soil, and nothing on a decent one. An established evergreen viburnum is a tough, self-sufficient shrub; feeding is for young plants and containers.

Propagation

Semi-ripe cuttings in late summer, in gritty compost in a covered pot. Low branches also layer themselves where they rest on the ground, and a rooted piece can simply be severed and moved.

Month by month

Months change with the climate: in southern Italy tomatoes go out two months earlier than in England.

  1. MarchLight feed as growth resumes. how ›
  2. AprilTrim to shape after flowering. how ›
  3. OctoberEnjoy autumn/winter berries, valuable for wildlife.

Months based on climate: UK. Your choice stays on this device.

  1. MarchLight feed as growth resumes. how ›
  2. AprilTrim to shape after flowering. how ›
  3. OctoberEnjoy autumn/winter berries, valuable for wildlife.

Months based on climate: Northern Italy. Your choice stays on this device.

  1. FebruaryLight feed as growth resumes. how ›
  2. MarchTrim to shape after flowering. how ›
  3. OctoberEnjoy autumn/winter berries, valuable for wildlife.

Months based on climate: Central Italy. Your choice stays on this device.

  1. FebruaryLight feed as growth resumes. how ›
  2. MarchTrim to shape after flowering. how ›
  3. NovemberEnjoy autumn/winter berries, valuable for wildlife.

Months based on climate: Southern Italy and islands. Your choice stays on this device.

Common problems

Viburnum beetlefull sheet ›

How to spot it. Skeletonised leaves from larvae and adult beetles.

What to do. Remove larvae by hand in spring.

Powdery mildewfull sheet ›

How to spot it. White coating.

What to do. Improve airflow.

How to spot it. On new growth.

What to do. Encourage predators.

Guelder roseJapanese snowball

Guelder rose

Water well through the first two summers to establish a strong root system before its first flowering display.

Part shade Water: average H6down to −20 °C 3–4 m tall · 2.5–3 m wide In a pot: yes
Flowering · UK
Flowering · Northern Italy
Flowering · Central Italy
Flowering · Southern Italy and islands

Care

Light

Standard viburnum siting.

Water

Standard shrub watering.

Soil

Fertile, moisture-retentive but well-drained soil.

Pruning

Prune immediately after flowering, since most deciduous types flower on the previous year's growth; remove one or two of the oldest stems at the base to renew.

Feeding

A spring feed and mulch is enough, and only really needed on thin soil. The winter-flowering kinds in particular flower perfectly well unfed for decades.

Propagation

Semi-ripe cuttings in late summer, or hardwood cuttings of the deciduous kinds after leaf fall. Suckering species can simply be divided by lifting a rooted sucker in the dormant season.

Month by month

Months change with the climate: in southern Italy tomatoes go out two months earlier than in England.

  1. MarchLight feed as growth resumes. how ›
  2. MayPrune immediately after flowering. how ›
  3. SeptemberEnjoy autumn colour and berries.

Months based on climate: UK. Your choice stays on this device.

  1. MarchLight feed as growth resumes. how ›
  2. MayPrune immediately after flowering. how ›
  3. SeptemberEnjoy autumn colour and berries.

Months based on climate: Northern Italy. Your choice stays on this device.

  1. FebruaryLight feed as growth resumes. how ›
  2. AprilPrune immediately after flowering. how ›
  3. SeptemberEnjoy autumn colour and berries.

Months based on climate: Central Italy. Your choice stays on this device.

  1. FebruaryLight feed as growth resumes. how ›
  2. AprilPrune immediately after flowering. how ›
  3. OctoberEnjoy autumn colour and berries.

Months based on climate: Southern Italy and islands. Your choice stays on this device.

Common problems

Viburnum beetlefull sheet ›

How to spot it. Skeletonised leaves.

What to do. Remove larvae by hand.

How to spot it. On new growth.

What to do. Encourage predators.

Powdery mildewfull sheet ›

How to spot it. In dry summers.

What to do. Improve airflow.

Popular varieties

Viburnum ‘Dawn’AGM2.5–3 m × 2 m · November–MarchNovember–MarchNovember–FebruaryNovember–February · Guelder rose
Viburnum ‘Eve Price’AGM2–3 m × 2–3 m · November–AprilNovember–AprilNovember–MarchNovember–March · Laurustinus

Questions

Viburnum: is it hardy?

Laurustinus: H4: Hardy through an average UK winter. It survives down to −10 °C. Guelder rose: H6: Hardy in the vast majority of UK gardens. It survives down to −20 °C.

Can it grow in a pot?

Laurustinus: For a few years while young. Guelder rose: While young, better suited to open ground long-term.

Viburnum: when do you prune it?

Laurustinus: Trim to shape after flowering; can be pruned harder if needed to renovate, and tolerates this well. In the calendar for UK, pruning falls in April. Guelder rose: Prune immediately after flowering, since most deciduous types flower on the previous year's growth; remove one or two of the oldest stems at the base to renew. In the calendar for UK, pruning falls in May.

Viburnum: when does it flower?

Laurustinus: In the climate of UK it flowers in November–March. Guelder rose: In the climate of UK it flowers in April–May.

When do you feed it?

Laurustinus: A general feed over a mulch in spring on poor soil, and nothing on a decent one. An established evergreen viburnum is a tough, self-sufficient shrub; feeding is for young plants and containers. Feeding months, UK: April. Guelder rose: A spring feed and mulch is enough, and only really needed on thin soil. The winter-flowering kinds in particular flower perfectly well unfed for decades. Feeding months, UK: April.