Pruning healthy wood should be done in winter. The most serious disease is anthracnose. Other diseases include canker, bacterial leaf scorch, powdery mildew and leaf spot. Insects that cause problems are aphids, sycamore lace bug, scales and borers. For more information on problems with sycamore, refer to the fact sheet Sycamore Problems , HGIC 2011 .
Aggressive roots can raise sidewalks if planted too close.
Plant at least 6 feet from the sidewalk or curb. Roots and dense shade created by the canopy of this tree prevent healthy growth of lawn grasses beneath it. Keep this tree away from well-tended lawns, pavement and buildings. Sycamores create litter with their leaves, fruit and twigs. The American planetree is also called sycamore, buttonwood and buttonball.