What is one of the main pests affecting ornamental plants?

Among the options, aphids are one of the most significant pests that affect ornamental plants primarily due to their ability to reproduce rapidly and feed on the sap of plants. They are small, soft-bodied insects that can cause considerable damage by weakening plants, resulting in stunted growth, leaf curling, and in some cases, the transmission of plant viruses. Additionally, aphids excrete honeydew, a sticky substance that can attract other pests like ants and lead to sooty mold growth, further complicating plant health issues.

The prevalence of aphids can vary by species of ornamental plants and environmental conditions, but they are commonly found in various cultivation settings. Proper identification and management of aphids are critical for maintaining the health and aesthetics of ornamental vegetation, making them a noteworthy pest in this context.