| Botanical name | Common name | Botanical name | Common name |
| Erysiphe cichoracearum: | Microsphaera species: | ||
| Achillea | Yarrow | Acacia | |
| Ajuga | Carpet bugle | Catalpa | |
| Alcea | Hollyhock | Ceanothus | Wild lilac |
| Antirrhinum | Snapdragon | Erica | Heath |
| Aster | Euonymus | ||
| Baccharis | Coyote bush | Hydrangea | |
| Begonia | Juglans | Walnut | |
| Calendula | Pot marigold | Lagerstroemia | Crape myrtle |
| Centaurea | Bachelor button | Ligustrum | Privet |
| Chrysanthemum | Mum, daisy marguerite | Liriodendron | Tulip tree |
| Lonicera | Honeysuckle | ||
| Citrullus | Watermelon | Magnolia | |
| Cosmos | Passiflora | Passion flower | |
| Cotinus | Smoke tree | Platanus | Plane tree, sycamore |
| Dahlia | Populus | Poplar | |
| Eucalyptus | Raphiolepis | India hawthorn | |
| Gerbera | Transvaal daisy | Rhododendron | Rhododendron, azalea |
| Hebe | |||
| Helianthus | Sunflower | Robinia | Locust |
| Lactuca | Lettuce | Vaccinium | Blueberry |
| Myosotis | Forget-me-not | Viburnum | |
| Papaver | Poppy | ||
| Ranunculus | Phyllactinia corylea: | ||
| Rhus | Sumac | Aesculus | Horse chestnut |
| Rudbeckia | Black-eyed Susan | Cornus | Dogwood |
| Salpiglossis | Painted tongue | Philadelphus | Mock orange |
| Salvia | Sage | Quercus | Oak |
| Senecio | Cineraria | Rubus | Bramble |
| Spiraea | |||
| Verbena | Podosphaera species: | ||
| Zinnia | Acer | Maple | |
| Fraxinus | Ash | ||
| Erysiphe polygoni: | Malus | Apple, crabapple | |
| Amaranthus | Amaranth | Photinia | |
| Aquilegia | Columbine | Prunus | Plum, peach, apricot, cherry, laurel |
| Begonia | |||
| Beta | Beet | Pyracantha | Firethorn |
| Brassicaceae | Cabbage family | Pyrus | Pear |
| Delphinium | Spiraea | ||
| Eschscholzia | California poppy | ||
| Iberis | Candytuft | Sphaerothecafuliginea: | |
| Lathyrus | Sweet pea | Cucumis | Cantaloupe, cucumber |
| Lobularia | Sweet alyssum | ||
| Phaseolus | Bean | Cucurbita | Winter squash |
| Pisum | Pea | ||
| Raphanus | Radish | Sphaerotheca species: | |
| Vinca | Periwinkle | Cotoneaster | |
| Viola | Pansy, viola, violet | Crataegus | Hawthorn |
| Dianthus | Carnation, pink, sweet William | ||
| Microsphaera alni: | |||
| Alnus | Alder | Erica | Heath |
| Corylus | Hazelnut | Fragaria | Strawberry |
| Lonicera | Honeysuckle | Gaillardia | Blanket flower |
| Platanus | Plane tree, sycamore | Heuchera | Coral bells |
| Quercus | Oak | Kalanchoe | |
| Symphoricarpos | Snowberry | Nicotiana | Flowering tobacco |
| Syringa | Lilac | Petunia | |
| Phlox | |||
| Potentilla | Cinquefoil | ||
| Ribes | Currant, gooseberry | ||
| Rosa | Rose | ||
| Tolmiea | Piggyback plant | ||
Adapted from A List of Powdery Mildews of California, University
of California Cooperative Extension Service leaflet 217.