Prunus mume - hardiness, disease?
I'm sure I've seen one of these here or there in person, but have never been aware of it.
Can anyone tell me about P. mume and it's many apparent cultivars?
Whitman Farms calls it less disease-susceptible than other Prunus, is this accurate?
How hardy is it, really? I've seen it rated anywhere from zone 5B (probably a stretch) to 7B as a minimum.