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Powdery Mildew Cross Listing

A few of the common powdery mildews and the plants that each can infect are listed below.

While some powdery mildews attack a very few specific plants, others have a broad host range and infect many different plants. It is important to recognize this because if a particular powdery mildew is infecting a plant in your nursery or greenhouse, you need to know what other plants might be at risk to the fungus as you decide what plants should be treated with a fungicide.

Host Plant Golovinomyces chicoracearum Erysiphe polygoni Phyllactinia guttata Sphaerotheca fuliginea Podosphaera macularis Podospheara pannosa Microsphaera penicillata Podosphaera clandestina Podosphaera xanthii Leveillula taurica
Acer

X X

X


Achillea X








Aesculus

X






Agastache


X X




Ageratum X








Ajuga X








Alnus

X


X


Amelanchier
X X



X

Angelonia X








Antirrhinum X








Artemesia X








Aquilegia
X







Asclepias X
X






Aster X








Astilbe
X







Baptista
X



X


Begonia X X







Berberis

X






Betula

X


X


Bidens X

X X




Boltonia X








Calendula X X







Callistephus X X







Campanula X








Capsicum X








Carica X








Carpinus

X






Castanea

X






Catalpa

X






Ceanothus
X

X
X


Centaurea X








Chysanthemum X








Clematis
X







Coreopsis X








Cornus

X
X
X


Corylus

X
X
X


Crassula









Crataegus

X



X

Cosmos X








Crotalaria
X







Cucumis X X
X





Cucurbita X X
X



X
Cuphea
X







Dahlia X X







Daucus
X







Delphinium X X

X




Eucalyptus X








Euonymus





X


Fagus

X


X


Fragaria

X X X




Fraxinus X
X


X


Gaillardia X

X X




Gardenia
X







Gaura
X







Gleditsia





X


Geranium
X
X X




Gerbera X

X X




Geum









Gloxinia X








Hedera X








Helenium X








Helianthus X X






X
Heliopsis X








Heuchera X
X X X



X
Hibiscus X








Hieracium X X







Hydrangea





X


Hypericum x X







Iberis









Ilex

X


X


Juglans

X


X


Kalanchoe


X





Kalmia





X


Lactuca X
X X





Lagenaria X








Lamium X








Leucothoe





X


Liatris X








Linaria X








Liriodendron
X X






Lithospermum X








Lonicera
X



X


Lupinus
X






X
Lycopersicon
X







Magnolia

X


X


Malus

X X X

X

Matricaria X

X X




Medicago
X







Mentha X X
X X




Mimulus X








Monarda X








Myosotis X








Nicotiana X








Oenothera
X







Paeonia
X







Papaver
X







Penstemon X








Phaseolus
X







Phlox X

X X




Pisum
X







Plantago X
X X X




Plantanus





X


Polygonum
X X






Populus X X X






Potentilla
X
X X




Primula
X







Prunus

X

X
X

Quercus
X X


X


Ramunculus
X

X




Rhododendron
X


X X


Rhus X
X
X X



Ribes


X X




Robinia
X X






Rosa

X X X X



Rubus

X
X




Rudbeckia X
X






Rumex

X






Salix









Salvia X








Sassafras

X






Saxifraga


X X




Scabiosa
X







Scrophularia X








Sedum
X







Senecio X

X X




Solanum X








Solidago X
X X





Spirea


X X
X X

Stachys X


X




Stokesia X








Syringa





X


Taraxacum X
X X X




Tiarella


X





Tilia

X


X


Trifolium X X



X


Ulmus

X


X


Vaccinium

X


X


Verbascum X








Verbena X






X
Veronica


X X




Viburnum





X


Vigna
X







Viola


X X
X


Zinnia X