Choosing Plants for Clay Soil: Trees and Shrubs

Choosing plants for clay soil can seem difficult as these cold heavy soils can prove rather inhospitable for many ornamental plants. However, we've put together some suggestions for trees and shrubs that are tolerant of these conditions and should do well for you.


Don't forget that, if you wish, you can extend the range of plants you can grow by improving or amending your soil.

For more ideas on choosing clay tolerant plants, go to Choosing Plants for Clay Soil: Perennials and Climbers.

Plants for Clay Soil: Trees

Crataegus laevigata 'Paul's Scarlet' (Hawthorn, Pinkthorn)
Form: tree
Foliage: deciduous
Hardiness: UK - fully hardy; North American hardiness zones 5 to 8
Soil: any soil other than totally waterlogged; tolerates clay
Situation: full sun or partial shade
Height: 8m (25ft)
Spread: 8m (25ft)
Awards: RHS AGM

Reasons to grow: This really tough little tree is a good choice if you're looking for plants for clay soil. It has a long season of interest bearing masses of double, deep pink flowers in spring, followed by small red fruits in the autumn. The shallowly lobed leaves are an attractive glossy mid green.

Also consider: C. laevigata 'Rosea Flore Pleno'.

Ilex aquifolium J. C. van Tol, Holly
Ilex aquifolium 'J. C. van Tol' (Holly)
Form: tree
Foliage: evergreen
Hardiness: UK - fully hardy; North American hardiness zones 7 to 9
Soil: any soil other than totally waterlogged; tolerates clay
Situation: full sun or partial shade
Height: 7m (23ft)
Spread: 4m (13ft)
Awards: RHS AGM

Reasons to grow: Self fertile variety therefore it will reliably produce a good crop of bright red berries every year. The long glossy dark green leaves are virtually spineless. Cream flowers in early summer.

Malus x zumi Golden Hornet, Crab Apple
Malus x zumi 'Golden Hornet' (Crab Apple)
Form: tree
Foliage: deciduous
Hardiness: UK - fully hardy; North American hardiness zones 5 to 8
Soil: any soil other than totally waterlogged; tolerates clay
Situation: full sun or light shade
Height: 10m (30ft)
Spread: 8m (25ft)
Awards: RHS AGM

Reasons to grow: Deep pink buds opening to a profusion of pink flushed white flowers in late spring are followed by golden yellow fruits (which make a delicious jelly!). The dark green foliage turns an attractive yellow in autumn.

Pyrus calleryana 'Chanticleer' (Chanticleer Pear)
Form: tree
Foliage: deciduous
Hardiness: UK - fully hardy; North American hardiness zones 5 to 8
Soil: prefers well drained fertile soil; tolerates clay
Situation: full sun
Height: 15m (50ft)
Spread: 6m (20ft)
Awards: RHS AGM

Reasons to grow: This narrowly conical ornamental pear tree makes a good specimen for a small garden. Attractive sprays of small white flowers in mid-spring are followed by round brown autumn fruits. The oval scalloped leaves are dark green and glossy and turn red before they fall. It copes well with atmospheric pollution and is a good choice for an urban garden.

Plants for Clay Soil: Shrubs

Cornus alba Sibirica, Red-Barked Dogwood
Cornus alba 'Sibirica' (Red-barked Dogwood)
Form: shrub
Foliage: deciduous
Hardiness: UK - fully hardy; North American hardiness zones 2 to 8
Soil: moist fertile soil; tolerates clay
Situation: full sun
Height: 2.5m (8ft)
Spread: 2m (6.5ft)
Awards: RHS AGM

Reasons to grow: Of all the plants for clay soil, this one is the most spectacular in winter with its almost glowing, bright red bark. It also has a good red autumn leaf colour.

For the very best bark colour, remove shoots close to the ground in spring to encourage the formation of new shoots for next winter's display.

Also consider: C. alba 'Kesselringii' for purplish black stems or C. sericea 'Flaviramea' for yellow stems.

Syringa vulgaris Katherine Havemeyer, Lilac
Syringa vulgaris 'Katherine Havemeyer' (Lilac)
Form: shrub
Foliage: deciduous
Hardiness: UK - fully hardy; North American hardiness zones 4 to 7
Soil: prefers fertile, well drained, neutral to alkaline soil; tolerates clay
Situation: full sun
Height: 7m (23ft)
Spread: 6m (20ft)
Awards: RHS AGM

Reasons to grow: Gloriously scented double lavender blue flowers opening from deep purple buds in late spring and early summer. Attractive heart shaped mid green leaves.

Also consider: Syringa vulgaris 'Madame Lemoine' for white flowers.

Weigela Florida Variegata
Weigela 'Florida Variegata'
Form: shrub
Foliage: deciduous
Hardiness: UK - fully hardy; North American hardiness zones 4 to 8
Soil: prefers well drained, fertile soil; tolerates clay
Situation: full sun
Height: 2.5m (8ft)
Spread: 2.5m (8ft)
Awards: RHS AGM

Reasons to grow: Abundant clusters of funnel shaped dark pink flowers in late spring and early summer. Attractive grey green leaves edged with white.

Need More Information?

You can find information and advice about garden soil, including links to other soil-related pages, at Healthy Garden Soil.

Spring is just around the corner!

"After the recent spells of bitterly cold winter weather, you might be forgiven for thinking that spring will never arrive this year.

But the days are definitely getting brighter and longer and there are signs of life reawakening in the garden. Now is the ideal time to assess how your garden has come through the winter and to start thinking ahead to the new gardening year.

Chances are things are looking a little tired and jaded outside so take this opportunity to give your yard or garden a spring clean and get it ship shape for the coming year.

Check out our spring gardening tips on revitalising lawns and borders and sprucing up structures and surfaces and make your spring garden a more enjoyable place to be!"




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