In fields all across the country, the last wildflowers of the year come into bloom: the white and violet asters, orange beggarticks, burr marigolds, tall goldenrod, zigzag goldenrod and Japanese knotweed. It may all be too much for the bees. They have been working since the end of April, and the other day when I found a bumblebee motionsless on its side in the middle of a red zinnia, I wondered if it were overworked, drunk with nectar, a debauchee of dew or simply sleepy. Hesitant to actually