What would cause cleanly cut circular holes to appear on the leaves of plants?

Answer 1

Cleanly cut circular holes on plant leaves are often caused by insect activity, particularly from certain beetles or caterpillars that feed on the foliage. Additionally, leafcutter bees can create such holes as they collect leaf pieces to construct their nests. Environmental factors, such as wind or mechanical damage, could also contribute, but the precision of the holes typically points to insect feeding behavior.

Answer 2

Cleanly cut circular holes on plant leaves are often caused by insect activity, particularly from leafcutter bees or certain types of caterpillars. Leafcutter bees collect leaf pieces to construct their nests, while caterpillars may chew through the leaves in a circular pattern. Fungal infections or environmental factors, like mechanical damage from wind or equipment, can also create similar patterns. Identifying the specific cause typically requires observing the plant and its surrounding environment.