What is a common symptom of a plant infested with scales?

A common symptom of a plant infested with scales is discolored and wilted foliage. Scale insects are small pests that feed on the sap of plants. As they feed, they damage the plant's tissue, leading to a reduction in vigor. The lack of nutrients and moisture can cause leaves to discolor, often turning yellow or brown, and they may begin to wilt as the plant struggles to cope with the stress. Additionally, heavy infestations can result in leaf drop and overall decline in plant health. This symptom is a clear indication of scale damage, making it vital for pest management practices to identify and rectify such infestations promptly.