Populus tremula · Tree
Poplar bacterial canker: Prune out infected wood in dry weather and disinfect tools between cuts to prevent spread.
Honey fungus: Improve drainage and avoid planting in infected soil; severe cases may require removal of the tree.
Tree rusts: Remove fallen leaves to reduce inoculum and ensure good air circulation around the canopy.
Leaf beetles and sawflies: Encourage natural predators like birds and wasps; hand-pick severe infestations if necessary.
Vigorous suckering: Cut back suckers at ground level in autumn or winter to maintain tree shape and control spread.