Which condition can encourage weed infestation in ornamental settings?

Deep soil cultivation can indeed encourage weed infestation in ornamental settings. This practice typically disturbs the soil profile, bringing dormant weed seeds to the surface where they can germinate and establish themselves more easily. By loosening the soil and exposing these seeds to light and optimal conditions, deep soil cultivation inadvertently creates a favorable environment for weeds, particularly if done without proper weed management practices in place.

While other practices like excessive mulching, proper weed management, and cleaning landscape equipment can help in managing weeds, deep soil cultivation directly interacts with the weed seed bank in the soil, resulting in an increase in weed presence if not managed correctly.