I've encountered some of those redbud roots. This tree isn't that big or old, but it was whipped around badly in a wind storm a few years ago. I should probably have removed it at the time.

What do you know about tomatoes being exposed to temperatures under 40 degrees? A friend said he's been told that even if they don't freeze, if they get the dose of cold their output will be stunted during the growing season. Can you confirm this, or add any information?

SRS