Cool, wet, foggy (cloud forest) summers - at that latitude, there's very little temperature difference between summer and winter.

Resin

Ok, I've already ordered a couple of seedlings from CF, another experiment to see how long they live. On the other hand, I also ordered a R. hancockii which should be interesting to try. I think it should do better in a sheltered spot.

Hi fairfield, what is CF, can you please share where you get these?

Thanks,

Aguila

Has anyone ever grafted that onto a hardier rootstock to see what happens? Might be an interesting experiment...

Random

aguila, CF is Camellia Forest Nursery. I would suppose grafting on to A. firma would help the roots, but not the top for heat, that is what I have to deal with. But it would be interesting nonetheless.

I think if grafting onto hardier rootstocks could generally make scionwood hardier, that would be known by now. And it is not. There are exceptions: for example, some citrus get marginally hardier on trifoliate rootstocks. But that's because it's a subtropical plant that doesn't have much overall resistance to cold. The main reason grafting onto different rootstocks is thought to have anything to do with survivability is because many, but not all, woody plants that die in heat & humidity do so because they get root rot diseases.