Pathogens in Gardens
As any gardener knows many garden plants are prone to disease. Gardens can be a great place to find pathogens, both on cultivated plants and weeds. For pathogens on weeds look at the page on urban pathogens .
Snowdrops Galanthus
Snowdrop White Mould Ramularia septata
Symptoms on a leaf — look for withered, greyish leaf tips.
Up close the white tufts of conidia are visible.
Conidia under high magnification. Unfortunately this is from before I got good at microscopy!
Common on the host in parks and gardens. Look for withered leaf tips on which are found tiny white conidia in tufts.
European distribution of Ramularia septata via GBIF .
Snowberry Symphoricarpos albus
Snowberry Powdery Mildew Erysiphe symphoricarpi
Extremely common on the host in gardens. Look for thin white patches on the leaves, sometimes distorting them slightly.
European distribution of Erysiphe symphoricarpi via GBIF .
Evergreen Spindle Euonymus japonicus
Evergreen Spindle Powdery Mildew Erysiphe euonymicola
Extremely common on the host in gardens. Look for felty white patches on the leaves, sometimes distorting and yellowing them slightly.
European distribution of Erysiphe euonymicola via GBIF .
Roses Rosa
Rose Powdery Mildew Podosphaera pannosa
Fairly common . Look for mildewed, sometimes distorted leaves.
European distribution of Podosphaera pannosa via GBIF .
