A few days away and so many messages! My apologies to those whose postings were apparently "ignored." Most have now been answered privately but to Penny, it is simply amazing how much expertise you have been sharing with everyone lately. I wonder how anyone can find the time to be so helpful. Don't I remember that you said you were taking a course? I do recall, not long ago, that you professed amateur standing. Are you now studying for the Master Gardener exam? That must be really interesting and I know we'd all love to hear about it from "an insider" so to speak. Don't be shy, Penny; you're so smart you should share with your gardening neighbors. Pat, in Texas