On Sat, Nov 3, 2012 at 12:46 AM, Peter Taggart <petersirises@gmail.com>wrote: > My limited experience with Merwilla plumbea suggests that they should be > pretty dry in winter. I grow Plumbea drakensbergensis. Here in California with our Mediterranean climate it does quite will in a moderately well draining mix exposed to the rain over winter. However, I usually have only light frosts and it is very rare that temperatures fall below 28F (-2C) for more than a few hours, and even then the high for that day will usually be in the mid 40s. As is frequently noted, a lot depends on your local conditions, but for me many, though certainly not all, dry winter species will overwinter, even in large pots, as long as they are not too wet and they are not subject to prolonged cold below 28F. Randy Monterey Bay Regions, California