Which of the following is NOT listed as a weed found among shrubs?

The appropriate response to this question highlights that thistle is commonly recognized as a type of weed, particularly in various landscapes, including among shrubs. Thistles are typically aggressive and can easily dominate areas, making them a nuisance in garden settings where they compete with cultivated plants for resources. In contrast, poison ivy, while sometimes found among shrubs, is primarily categorized as a plant that can cause allergic reactions, rather than being a conventional weed. Goldenrod is also frequently encountered in nature and can thrive in shrubby areas, contributing to the weed category. Bindweed is similarly characterized as a problematic plant that can spread rapidly among shrubs.

Thus, thistle is firmly established as a weed commonly associated with shrub environments, which supports why it aligns with the classification of weeds in that context.