Which of the following plants is classified as invasive?

Kudzu is classified as an invasive plant because it is non-native to the areas where it grows and tends to spread rapidly, outcompeting local flora for resources such as sunlight, water, and nutrients. Originally introduced to the United States from Asia for erosion control and as an ornamental plant, it has become notorious for its aggressive growth and ability to dominate landscapes, often leading to ecological harm by disrupting native ecosystems.

In contrast, bluebell, buttercup, and sunflower are not considered invasive in the same way. Bluebells are native to certain regions and do not exhibit the same patterns of rapid spread that characterize invasive species. Buttercups, while they can be common in some areas, are generally not classified as invasive in the same manner as kudzu. Sunflowers are often cultivated or found in the wild without overwhelming local ecosystems. Understanding the characteristics of these plants highlights the broader implications of introducing non-native species into environments where they can thrive unchecked.