Is it fall yet? I feel like a kid asking, are we there yet? August days are trying for gardeners and nature watchers in the southern U.S. It's the worst time of our gardening year, actually -- even in 'good' years, it's hot and often dry. This year, we've already hit 100° in the first week of August. And hardly a drop of rain in the forecast. The cutting from the hardy rose at the corner of the house is flowering beautifully, two hummingbirds are chasing each other outside my window, and I'm harvesting tomatoes, squash, and yardlong beans (the regular beans are sulking in the heat), so I'm grateful for that. And, the dry weather, unlike our usual humid summer days, makes mornings and evenings quite pleasant, instead of sticky. But I'm enjoying thinking about fall vegetables, tough fall-flowering perennials, and fall color. The lettuces, mustard, and mesclun mixes in flats are doing well, although I'm waiting to sow some other t...