What is a common indicator of overwatering in ornamental plants?

A common indicator of overwatering in ornamental plants is yellowing leaves and root rot. When plants receive excess water, it creates conditions that can lead to poor oxygen availability in the soil, causing root systems to become damaged and start to rot. As the roots fail to function properly, the plant struggles to take up nutrients and water, leading to the yellowing of leaves. This yellowing occurs because the roots are unable to supply adequate nutrients to the leaves, causing them to lose their vibrant green color and become pale or yellow.

Root rot, often caused by pathogens that thrive in overly wet conditions, further exacerbates the situation by further impairing the plant’s ability to absorb nutrients and water. It's essential for gardeners to monitor their watering practices and ensure that the soil has adequate drainage to prevent these issues.

The other options indicate various plant stress symptoms but are not specific indicators of overwatering. For instance, wilting leaves can also be a sign of underwatering or other stress factors. Stunted growth and browning tips may point to nutrient deficiencies or other environmental stresses, while rapid growth and increased flowering usually indicate healthy growth conditions rather than overwatering.