it comes and grows

the other day i was walking west on cornelia and came across this patch of dirt that someone had obviously taken great pains to seed and then cover with hay and then a layer of tight-mesh screen, assuring that the growth of this grass would not be interrupted by heavy footfalls or disrupted by hungry birds.

yesterday i walked by the same patch to see dozens of seedlings--some nearly 3 inches tall already--coming up through the hay and screen. of course, there wasn't a blade of grass to be seen. it was all weeds. why is it that what comes so easily, so abundantly is almost always what's least desired?