Ribes rubrum · Shrub
Currant leaf spot: Rake up and dispose of fallen leaves in autumn to reduce overwintering spores.
Powdery mildew: Prune for good air circulation and choose resistant varieties where possible.
Currant blister aphid: Encourage natural predators like ladybirds; chemical control is rarely needed.
Coral spot: Prune out affected branches during the dormant season to improve hygiene.
Gall midge: Cut off and destroy affected shoot tips as soon as symptoms are noticed.