The Canadian Chestnut Council

CCC has sent nuts around too, before the Species at Risk and Endangered Species acts prevented sending seed. Then, private individuals with a tree or two in their yards have sent seed too, so there are quite a few trees from Canadian genetics here (Atlantic provinces) Many folks don't want to be in the database, as it's too public, so you can at least double the locations with chestnut. Some folks have quite a few, several hundred acres with a lot of chestnuts sprinkled in mixed woods. There were two glacial refuges during the last glacial maximum, and as the weather warmed, the trees spread north. The mountains, Appalachians, limited gene flow as both populations moved north, so the Canadian ones differ a little from the US ones, mostly in dormancy length before they will lose hardiness in a winter thaw. For the more difficult sites, with up and down temperatures, choose Canadian seedlots to prevent cold damage.