Following the powdery mildew baseline review and promises of a ‘most wanted list‘, I thought it important to collate a list of host plants recorded to harbour this fungal pest here in the UK.
Catalpa bignoniodes can be infected by more than one different powdery mildew species!
This is by no means a complete list of all the plants which can possibly be infected but simply a review of previous records brought together from the Kew Fungarium, the extensive records of Arthur Chater, dating back to August 1995, and my own records from July 2013 to the present day.
The list includes 495 different plant species.
| Associated Organism | |
| Acalyphe brachystachya | Acanthus mollis |
| Acanthus spinosus | Acanthus vulgaris |
| Acer campestre | Acer macrophylla |
| Acer negundo | Acer platanoides |
| Acer platanoides ‘Crimson King‘ | Acer pseudoplatanus |
| Acer tataricum | Aconitum firmum |
| Aconitum variegatum | Aegopodium podagraria |
| Aesculus hippocastanum | Aesculus x carnea |
| Aesculus x plantierensis | Agrophyron repens |
| Ailanthus altissima | Ajuga reptans |
| Ajuga reptans var. purpurea | Akebia quinata |
| Alchemilla glabra | Alliaria petiolata |
| Alnus glutinosa var. glutinosa | Alnus incana subsp. rugosa |
| Alnus serrulata | Amelanchier canadensis |
| Amelanchier laevis | Amelanchier lamarckii |
| Anchusa arvensis | Angelica sylvestris |
| Anoda wrightii | Anthoxanthum odoratum |
| Anthriscus caucalis | Anthriscus sylvestris |
| Antirrhinum majus | Aphanes australis |
| Aquilegia vulgaris | Arctium minor |
| Arctium minus | Arrhenatherum elatius var. elatius |
| Artemisia lavendulaefolia | Artemisia vulgaris |
| Aster amellus | Aster novi-belgii |
| Aster x salignus | Astragalus glycyphyllos |
| Avena sativa | Avena sterilis subsp. ludoviciana |
| Ballota nigra | Begonia ‘Semperflorens Group‘ |
| Bellis perennis | Berberis thunbergii var. atropurpurea |
| Berberis x ottawensis | Beta vulgaris |
| Beta vulgaris subsp. maritima | Betula kamtschatica |
| Betula papyrifera | Betula pendula |
| Betula populifolia | Betula pubescens |
| Betula utilis subsp. jacquemontii | Borago officinalis |
| Brassica nigra | Calendula officinalis |
| Caltha palustris | Calystegia sepium |
| Calystegia silvatica | Capsella bursa-pastoris |
| Cardamine heptaphylla | Cardaria draba |
| Carduus crispus | Carpinus betulus |
| Cassia sturtii | Catalpa ×erubescens |
| Catalpa bignonioides | Catalpa bignonioides ‘Aurea‘ |
| Catalpa speciosa | Celastrus scandens |
| Centaurea montana | Centaurea nigra |
| Centranthus ruber | Chaerophyllum aureum |
| Chaerophyllum temulum | Chitalpa tashkentensis |
| Chrysanthemum parthenium | Circaea lutetiana |
| Cirsium arvense | Cirsium heterophyllum |
| Cirsium oleraceum | Cirsium palustre |
| Cirsium vulgare | Clematis argentilucida |
| Clematis jackmanni | Clematis ‘Perle d’Azur‘ |
| Clematis texensis | Clematis vitalba |
| Cleome × ‘Violet Queen‘ | Cleome spinosa |
| Cnidium sp. | Comarum palustre |
| Comus sanguinea | Conium maculatum |
| Convolvulus arvensis | Cornus australis x sanguinea |
| Cornus florida | Cornus nuttallii |
| Cornus sanguinea | Cornus sericea |
| Coronilla varia | Corylus avellana |
| Crataegus laevigata ‘Paul’s Scarlet’ | Crataegus monogyna |
| Crataegus x subsphaerica | Crateagus monogyna forma semperflorens |
| Crepis biennis | Crepis capillaris |
| Crepis vesicaria subsp. taraxacifolia | Cucurbita maxima |
| Cucurbita pepo | Cydonia oblonga |
| Cymbalaria muralis | Cynoglossum germanicum |
| Cynoglossum officinale | Dactylis glomerata |
| Dahlia sp. | Delphinium ‘Kennington Classic‘ |
| Deutzia crenata | Deutzia scabra ‘candidissima’ |
| Diplotaxis tenuifolia | Dipsacus fullonum |
| Echinops ritro ‘Taplow Blue’ | Echinops sphaerocephalus |
| Echium plantagineum | Echium vulgare |
| Elytrigia atherica | Elytrigia repens |
| Epilobium brunnescens | Epilobium ciliatum x montanum |
| Epilobium ciliatum x obscurum | Epilobium hirsutum |
| Epilobium montanum | Epilobium obscurum |
| Epilobium palustre | Epilobium parviflorium |
| Epilobium tetragonum | Erechtites hieracifolia |
| Erodium moschatum | Eschscholtzia californica |
| Euonymus bungeanus | Euonymus europaeus |
| Euonymus japonicus | Eupatorium cannabinum |
| Euphorbia amygdaloides subsp. amygdaloides ‘Purpurea’ | Euphorbia characias |
| Euphorbia helioscopia | Euphorbia peplus |
| Euphrasia confusa x nemorosa | Euphrasia confusa x officinalis subsp. pratensis |
| Euphrasia officinalis subsp. anglica | Fagus sylvatica |
| Filipendula ulmaria | Fragaria vesca |
| Frangula alnus | Frangula alnus var. latifolia |
| Fraxinus escelsior | Fraxinus excelsior ‘Myrsifolia‘ |
| Fraxinus excelsior ‘Pendula‘ | Fraxinus ornus |
| Fraxinus pennsylvanica | Fumaria bastardii |
| Fumaria densiflora | Fumaria muralis subsp. boraei var. major |
| Fumaria occidentalis | Fumaria parviflora |
| Fumaria purpurea | Fumaria reuteri |
| Galega officinalis | Galeopsis bifida |
| Galeopsis tetrahit | Galium aparine |
| Galium odoratum | Geranium rotundifolium |
| Geranium × magnificum | Geranium dissectum |
| Geranium molle | Geranium phaeum |
| Geranium pratense | Geum urbanum |
| Geum macrophyllum | Glechoma hederacea |
| Gnaphalium luteoalbum | Hamamelis virginiana |
| Hebe sp. | Hedera algeriensis ‘Gloire de Marengo’ |
| Helianthus epiphyllus ‘Gold & Silver’ | Helianthus resinosus |
| Helminthotheca echioides | Hemiptelea davidii |
| Heracleum mantegazzianum | Heracleum sphondylium |
| Hesperis matronalis | Heuchera ‘Galaxy‘ |
| Heuchera ‘Caramel‘ | Hieracium grandidens |
| Hieracium sabaudum | Hieracium subcrocatum |
| Hieracium vagum | Hirschfeldia incana |
| Hordeum murinum | Hordeum vulgare |
| Humulus lupulus | Hydrangea sp. |
| Hypericum hirsutum | Hypericum maculatum subsp. obtusiusculum |
| Hypericum perforatum | Hypericum tetrapterum |
| Hypericum x desetangsii | Hypochaeris radicata |
| Impatiens capensis | Juglans mandshurica |
| Knautia arvensis | Knautia macedonica |
| Knautia ‘melton hybrid’ | Laburnum anagyroides |
| Lactuca serriola | Lactuca virosa |
| Lamiastrum galeobdolon | Lamium album |
| Lamium amplexicaule | Lamium hybridum |
| Lamium purpureum | Lapsana communis |
| Lathyrus odoratus | Lathyrus pratensis |
| Lavatera olbia | Ligustrum vulgare |
| Limonium vulgare | Linaria repens |
| Lithospermum officinale | Lonicera japonica |
| Lonicera periclymenum | Lonicera tragophylla |
| Lotus pedunculatus | Lunaria rediviva |
| Lupinus albus | Lupinus perennis |
| Lupinus polyphyllus | Lupinus x regalis ‘Russell hybrid’ |
| Lychnis coronaria | Lycium barbarum |
| Lycium chinense | Lycopus europaeus |
| Lythrum salicaria | Macleaya microcarpa |
| Magnolia × ‘Judy‘ | Magnolia × soulangiana ‘Alba‘ |
| Magnolia × ‘Susan‘ | Mahonia x wagneri |
| Mahonia aquifolium | Mahonia pinnata |
| Malus domestica | Malus pumila |
| Malus baccata | Malus baccata var. praecox |
| Malus ‘Cox’s Orange Pippin’ | Malus floribunda |
| Malus moellerianus | Malus sylvestris |
| Malva pusilla | Marrubium vulgare |
| Matricaria discoidea | Meconopsis sp. |
| Medicago lupilina | Medicago sativa |
| Melilotus altissimus | Melilotus officinalis |
| Mentha aquatica | Mentha x villosa |
| Mespilus germanica | Milium effusum ‘Aureum‘ |
| Mitella sp. | Monarda ‘Croftway Pink’ |
| Monarda didyma | Monarda didyma ‘Schneewittchen‘ |
| Mycelis muralis | Myosotis arvensis |
| Myosotis sylvatica | Odontites verna |
| Oenothera biennis | Oenothera cambrica |
| Oenothera stricta | Oenothera x fallax |
| Ononis repens | Onosma sp. |
| Origanum vulgare | Osteospermum jucundum |
| Ouercus petraea | Oxalis europaea |
| Paeonia japonica | Papaver dubium |
| Papaver rhoeas | Papaver somniferum |
| Parapholis sp. | Parietaria judiaca |
| Parietaria pensylvanica | Passiflora caerulea |
| Pentaglottis sempervirens | Persicaria amplexicaulis |
| Persicaria lapathifolia | Petunia x hybrida |
| Peucedanum palustre | Phagnalon graecum |
| Phlox Light Pink Flame ‘Bareleven’ | Phlox ‘Miss Lingard’ |
| Phlox paniculata | Phlox paniculata ‘Becky Towe’ |
| Photinia sp. | Picris echioides |
| Pilosella aurantiaca | Pimpinella saxifraga |
| Pisum sativum | Plantago lanceolata |
| Plantago coronopus | Plantago major |
| Plantago maritima | Platanus × acerifolia |
| Platanus orientalis | Platanus x hispanicus |
| Poa humilis | Poa pratensis |
| Poa trivialis | Polemonium caeruleum |
| Polygonum agrestinum | Polygonum arenastrum |
| Polygonum aviculare | Polygonum chamaechyton |
| Polygonum polycnemiforme | Populus canadensis |
| Populus nigra hybrid | Potentilla anglica |
| Potentilla erecta | Potentilla litoralis |
| Potentilla reptans | Potentilla sterilis |
| Prunus spinosa | Prunus domestica subsp. insititia |
| Prunus laurocerasus | Prunus lusitanica |
| Prunus padus | Prunus pumila var. depressa |
| Prunus spinosa | Pseudofumaria lutea |
| Pulmonaria longifolia | Pulmonaria officinalis |
| Pulmonaria sacchorata | Pyracantha sp. |
| Pyrus communis | Pyrus malus |
| Quercus cerris | Quercus petraea |
| Quercus pontica × dentata ‘Pondaim‘ | Quercus robur |
| Quercus serrata | Quercus velutina |
| Quercus x rosacea | Querucs ilicifolia |
| Ranunculus aconitifolius | Ranunculus acris |
| Ranunculus bulbosus | Ranunculus flammula |
| Ranunculus repens | Rhamnus alaternus |
| Rhamnus cathartica | Rhododendron × daviesii |
| Rhododendron ‘Exquisetum‘ | Rhododendron luteum |
| Ribes sanguineum | Ribes nigrum |
| Ribes uva-crispa | Robinia pseudoacacia |
| Rosa banksiae | Rosa gallica |
| Rosa ‘Madame Alfred Carrière’ | Rosa ‘American Pillar’ |
| Rosa arvensis | Rosa canina Group Transitoriae |
| Rosa ‘Dorothy Perkins’ | Rosa mulliganii |
| Rosa multiflora | Rosa rugosa |
| Rosa setigera hybrid | Rosmarinus officinalis |
| Rubus fruticosus | Rubus idaeus |
| Rumex acetosella | Rumex crispus subsp. crispus |
| Salix aurita | Salix caprea |
| Salix cinerea subsp. oleifolia | Salvia officinalis ‘Purpurascens’ |
| Salvia verbenaca | Sambucus nigra |
| Sambucus racemosa | Sanguisorba officinalis |
| Saussurea sp. | Scabiosa atropurpurea |
| Scabiosa columbaria | Scandix pectenveneris |
| Senecio aquaticus | Senecio erucifolius |
| Senecio jacobaea | Senecio sylvaticus |
| Senecio viscosus | Senecio vulgaris |
| Silene dioica | Silene latifolia subsp. alba |
| Sisymbrium irio | Sisymbrium officinale |
| Smyrnium olusatrum | Solenostemon scutellarioides |
| Solidago gigantea subsp. serotina | Solidago virgaurea |
| Sonchus arvensis | Sonchus asper |
| Sonchus oleraceus | Sonchus palustris |
| Sorbus aria | Sorbus aucuparia |
| Spiraea sp. | Stachys annua |
| Stachys arvensis | Stachys byzantina |
| Stachys palustris | Stachys sylvatica |
| Succisa pratensis | Symphoricarpos albus |
| Symphytum × uplandicum | Symphytum caucasicum |
| Symphytum officinale | Syringa vulgaris |
| Tagetes sp. | Taraxacuym officinale |
| Tellima grandiflora ‘Purpurea‘ | Thalictrum minus |
| Thesium humifusum | Thunbergia alata |
| Tolmiea menziesii | Torilis japonica |
| Tragopogon pratensis | Trifolium arvense |
| Trifolium campestre | Trifolium dubium |
| Trifolium hybridum | Trifolium incarnatum subsp. incarnatum |
| Trifolium lupinaster | Trifolium medium |
| Trifolium micranthum | Trifolium pratense |
| Trifolium repens | Trifolium strictum |
| Triticum aestivum | Ulmus procera |
| Urtica dioica | Vaccinium myrtillus |
| Valeriana officinalis | Valeriana phu |
| Valerianella carinata | Valerianella locusta |
| Verbascum cf. chaixii | Verbascum nigrum |
| Verbascum thapsus | Verbena bonariensis |
| Verbena officinalis | Veronica chamaedrys |
| Veronica longifolia | Veronica persica |
| Viburnum tinus | Viburnum lantana |
| Viburnum opulus | Viburnum tinus |
| Vicia cracca | Vicia sativa |
| Vicia sylvatica | Vicia villosa |
| Vinca major | Vinca minor |
| Vitis vinifera | Vivia sativa subsp. nigra |
| Wisteria brachybotrys ‘Murasaki-kapitan’ | Wisteria frutescens ‘Amethyst Falls’ |
| Wisteria sinensis | Xanthium sp. |
