Crabgrass gets no respect. But we should perhaps take a moment to focus on the miracle that is Digitaria sanguinalis. Take for example, the specimen pictured below. I am quite certain there was no sign of it a week ago, yet as a week of blazing sun in the mid-90s or higher sizzled other grass, this little guy got a start in life and took off running; then two days of heavy rain turned him into a behemoth, a huge hunk of hearty herbaceousness about six inches across. And this plant isn't alone, not at all, because crabgrass tends to travel Japanese-style, in large clusters (but without the cameras).
So, let's admire the humble crabgrass for its ubiquity and persistence. It's not even a wholly ugly plant in the early morning, speckled with dew.