Herbaceous perennials for alkaline soils

Acanthus mollis, A. spinosus
Achillea
Actaea simplex Atropurpurea Group ‘Brunette’ AGM
Adenophora bulleyana
Agapanthus
Agastache
Alstroemeria
Anchusa azurea ‘Lodden Royalist’
Anemone hupehensis, A. × hybrida
Anthemis punctata subsp. cupaniana AGM, A. tinctoria ‘E.C. ‘Buxton’, A. tinctoria ‘Sauce Hollandaise’
Aquilegia
Armeria
Artemisia absinthium ‘Lambrook Silver’, A. arborescens AGM, A. lactiflora Guizhou Group
Aster
Astilbe
Ballota pseudodictamnus AGM (e)
Bergenia ‘Bressingham Ruby’, B. cilliata, B. ‘Morgenrote’ AGM, B. ‘Overture’ (e)
Calendula officinalis (Pot marigold)
Campanula glomerata ‘Superba’ AGM, C. ‘Kent Belle’ AGM, C. lactiflora ‘Pritchards Variety’ AGM
Catanache caerulea ‘Major’ AGM
Centaurea
Centranthus ruber
Cerinthe major ‘Purpurascens’
Chelone obliqua
Convallaria majalis (gc)
Coreopsis
Corydalis
Crambe cordifolia AGM
Crocosmia
Cynara cardunculus AGM (cardoon), C. cardunculus Scolymus Group (artichoke)
Cynoglossum
Delphinium
Dianthus
Dicentra
Digitalis
Doronicum
Echinacea
Echinops
Eremurus
Erigeron
Erodium
Eryngium
Erysimum
Eupatorium
Euphorbia
Gaillardia
Galega
Gaura
Gazania
Geranium
Geum
Helenium
Helianthus
Helleborus
Hemerocallis
Heuchera
Hosta
Inula
Iris
Knautia
Kniphofia
Lavatera
Leucanthemum
Liatris
Limonium
Linum
Lobelia
Lychnis
Macleaya
Malva including Malva alcea and Malva moschata f. alba
Marrubium
Mimulus
Monarda
Morina
Nepeta
Oenothera
Origanum
Paeonia lactiflora
Papaver
Penstemon
Persicaria
Phlomis
Physalis
Physostegia
Platycodon
Polemonium
Polygonatum
Potentilla
Pulsatilla
Pyrethrum
Rudbeckia
Saponaria
Salvia
Scabiosa
Sedum
Sidalcea
Silene
Solidago
Thalictrum
Tiarella
Tradescantia
Trollius
Verbascum
Verbena
Veronica
Viola
Zauschneria