Dear Readers: You've probably noticed that this winter is shaping up, weather-wise, just like the super-dry one we had last year. I hope you've been doing your winter watering. Every three weeks or so, it's vital to give your lawn, young trees, bushes, and flowering perennials a good drink of water. That's why, last fall, I recommended against blowing out the sprinkler system. If you did, that's OK, but you'll have to drag hoses and sprinklers all over the yard. Winter watering is vital to wet...