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Without some intervention, clay soils can be like concrete in summer and a sticky mess in winter. Any effort to improve the texture of clay will be rewarded with strong plant growth. This soil is rich in nutrients and will happily accommodate a considerable range of plants.
When planting on heavy clay soil it is always advisable to attempt some improvement of the soil, by working in organic matter. Mulching the surface of the soil will also help improve the texture.
Acer japonicum, A. palmatum (Japanese maple)
Amelanchier lamarckii AGM
Laburnum anagyroides, L. × watereri 'Vossii' AGM
Malus (crab apple)
Pyrus salicifolia 'Pendula' AGM (weeping pear)
Chamaecyparis lawsoniana, C. obtusa, C. pisifera
Ginkgo biloba AGM
Juniperus chinensis, J. × pfitzeriana
Picea abies, P. glauca, P. omorika AGM, P. orientalis AGM, P. pungens
Taxodium distichum AGM
Tsuga candensis, T. heterophylla AGM
Berberis (evergreen and deciduous)
Cotoneaster (evergreen and deciduous)
Viburnum (deciduous and evergreen)
Gaultheria procumbens AGM, G. shallon, G. × wisleyensis 'Wisley Pearl'
Juniperus communis, J. rigida subsp. conferta 'Blue Pacific', J. horizontalis 'Wilsonii'
Persicaria affinis, P. bistorta, P. vacciniifolia AGM
Vinca major, V. minor
Chaenomeles speciosa 'Moerloosei' AGM (pink) and 'Nivalis' (white)
Cotoneaster horizontalis AGM, C. lacteus AGM
Forsythia suspensa AGM
Escallonia 'C.F. Ball', E. 'Edinensis' AGM
Garrya elliptica 'James Roof' AGM
Hydrangea anomala subsp. petiolaris
Lonicera japonica, L. periclymenum
Anemone hupehensis var. japonica, A. × hybrida
Aster novae-angliae, A. novi-belgii
Sedum spectabile AGM
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The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.