Which of the following plants is characterized as a weed and is also known for its difficulty in control?

Field bindweed is recognized as a problematic weed due to its aggressive nature and resilience against various control methods. It exhibits a robust growth pattern, featuring deep-rooted systems that allow it to thrive in different soil types and conditions. This vine-like plant can quickly encircle and choke out desirable crops, making it particularly challenging to manage. Its ability to propagate through seed production as well as vegetative reproduction contributes to its persistence and makes eradication efforts more complex.

The other plants mentioned do not exhibit the same level of control issues as field bindweed. Bluegrass, for instance, is often considered a desirable turf grass rather than a weed. Crabgrass is an annual weed that can be managed with proper timing of herbicides and cultural practices. Wild clover may appear in certain contexts as an unwanted species, but it generally does not pose as significant a challenge as field bindweed when it comes to control and management in crops.