What common ornamental pest is known for producing honeydew?

Aphids are recognized as common ornamental pests primarily due to their behavior of feeding on plant sap. As they consume the sap, they excrete a sticky substance known as honeydew, which can become a nuisance. This honeydew not only encourages the growth of sooty mold but can also attract other pests, such as ants, which tend to farm aphids for their honeydew. The presence of honeydew is a clear indicator of aphid activity, making them a target for both pest control and management strategies in ornamental horticulture. Their ability to reproduce rapidly and form large colonies further exacerbates the threat they pose to ornamental plants.