I've had such a hard time finding ume plums lately that I wonder if it's worth it to buy an ume sapling. Problem is, I've haven't been able to find any sources in the US.
I bought three blueberry bushes from White Flower Farm (in CT) recently, and they were sold out soon after; I know you can sometimes get more unusual citrus trees from them (beyond the usual kaffir limes and meyer lemons), but I've never seen anything as unusual as ume plum trees for sale there or anywhere else in the Northeast.
Has anyone successfully tracked down harder-to-find plants/fruit trees like this? I'd love to know about any and all US sources!