Essentially, if you can see this weed in spring, it isn't crabgrass ... bushy seedheads that look like the tail of a fox, hence the common name. By contrast, crabgrass seedheads are less obvious ...

It loves to settle in grass and can turn even the most beautiful carpet of lawn into a tardy mess. Here, we explain what crabgrass is, what it looks like, and why it is bad for your lawn ...