Shrubs, trees and climbers

Pieris

PierisEricaceae
Also: Lily-of-the-valley shrub, Andromeda
AT A GLANCE
Part shade Water: average H5down to −15 °C 1–3 m tall · 1–3 m wide In a pot: yes
Flowering · UK
Flowering · Northern Italy
Flowering · Central Italy
Flowering · Southern Italy and islands

Only for acid soil or a pot of ericaceous compost; give it the same conditions as a rhododendron or camellia.

Care

Light

Part shade, sheltered from cold wind and early morning sun, which frost-burns the new red growth.

Water

Medium — keep moist with rainwater, especially in pots.

Soil

Acid, humus-rich, moist but well-drained soil or ericaceous compost; it won't tolerate lime.

Pruning

Deadhead after flowering and trim lightly to shape; cut out frost-damaged shoots.

Feeding

An ericaceous feed in spring; a mulch of leaf mould or pine bark.

Propagation

Semi-ripe cuttings in summer or layering.

Month by month

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

  1. AprilCover young red growth with fleece if a late frost is forecast. how ›
  2. MayRemove faded flower clusters. how ›
  3. MayFeed with an ericaceous fertiliser and mulch. how ›

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

  1. MayRemove faded flower clusters. how ›
  2. MayFeed with an ericaceous fertiliser and mulch. how ›

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

  1. AprilRemove faded flower clusters. how ›
  2. AprilFeed with an ericaceous fertiliser and mulch. how ›

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

  1. AprilRemove faded flower clusters. how ›
  2. AprilFeed with an ericaceous fertiliser and mulch. how ›

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

Common problems

Yellow leaves (chlorosis)

How to spot it. Pale leaves with green veins.

What to do. Soil or water too alkaline; use rainwater and ericaceous feed.

Frost-scorched new growth

How to spot it. New red shoots blackened.

What to do. Trim off; shelter the plant.

Phytophthora root rotfull sheet ›

How to spot it. Wilting and dieback in wet soil.

What to do. Improve drainage.

Questions

Pieris: is it hardy?

H5: Hardy in most of the UK, but can struggle in the coldest inland or upland spots. It survives down to −15 °C.

Can it grow in a pot?

Yes — the best way on alkaline soil, in ericaceous compost.

Pieris: when do you prune it?

Deadhead after flowering and trim lightly to shape; cut out frost-damaged shoots.

Pieris: when does it flower?

In the climate of UK it flowers in March–May.

When do you feed it?

An ericaceous feed in spring; a mulch of leaf mould or pine bark. Feeding months, UK: April.