Annuals

Ageratum
Alyssum
Antirrhinum
Calendula
Canna
Cineraria
Eschscholzia
Fuchsia
 

Gazania
Lavatera
Lobelia
Mesembryanthemum
Portulaca
Salvia
Stock
Sweet Pea
  

Herbaceous Perennials

Acanthus
Agapanthus
Allium
Armeria
Centranthus
Crambe cordifolia and C. maritima
Cynara cardunculus
Echinops
Foeniculum vulgare
Helleborus
 

Kniphofia
Limonium
Miscanthus
Origanum
Rudbeckia falgida
Ruta graveolens
Salvia superba
Sedum
Thymus
  

Shrubs

Abutilon
Arbatus unedo
Arundinaria
Chamaerops humilis
Choisya ternata
Cistus
Colutea
Cordyline
Cotoneaster
Cytisus
Eleagnus
Escallonia
Eucalyptus
Euonymus
Euphorbia
Fremontodenron
Fuchsia
Garrya elliptica
Genista
Halimum
Hebe
Hedera
Helianthemum
Helichrysum
Hippophae rhamnoides
  

Hydrangea macrophylla
Ilex aquifolium
Lavandula
Millifera
Myrtus
Olearia
Phlomis
Phormium
Pittosporum
Pyracantha
Rosa
Rosmarinus
Salix
Salvia officinalis
Sambuscus racemosa
Santolina
Sempervivum
Senecio
Spartium
Spirea
Tamarix
Trachycarpus fortunei
Ulex
Virburnum
Yucca

Trees

Acer platanoides & A. pseudoplatanus
Arbutus unedo
Castanea
Crataegus
Fraxinus
 
 

Pinus nigra
Populus alba, P. canascens &
P. nigra 'Italica'
Quercus ilex & Q. robur
Sorbus aria & S. aucuparia

These lists are by no means exhaustive. If you can think of a plant that needs adding, why not email me and let me know.