This is it, the last day of summer. Tomorrow's the equinox, that exact angle of the sun - mere degrees - and suddenly it's fall. In my garden, a small patch of order borrowed from a canyon hillside, the artichokes are growing larger and the tomatoes are growing fewer. These sunflowers, torch tithonia, are blooming like mad. And this butterfly - a swallowtail? - besotted by the scent and color, seems equally unaware of time passing. For a moment, anyway.