Posted: 30/11/2013 at 07:27
Rosemary and many other herbs are mediterranean plants that may well have suffered because of soggy conditions.
There are all sorts of conditions that will kill a potted conifer off, including under or over watering.
Cosmos die down in the winter.
Houttuynia cordata are deciduous shrubby plants that lose their leaves and die right down in the winter. http://plantfinder.sunset.com/plant-details.jsp?id=1477
With the greatest of respect, I'm wondering if we might not be panicking a little bit here?