Yes, sure they'll produce cones, maybe in a couple of hundred years . . . well, let's be honest, the age of first coning doesn't seem to be known, but it isn't young. As far as I know, neither cones nor adult foliage have ever been seen on any Taiwania outside of its native area.

Propagating mature foliage would certainly be interesting to try, but given import restrictions on live conifer foliage, you wouldn't be able to use the technique to get mature foliage and cones in Britain.

Resin

I have seen self-sown Taiwania seedlings at Kyoto Botanical Garden in Japan, so infer the presence of cones there. Don't know about adult foliage, though.

OS

I've been growing up a group of seedlings for 3-4 years and several have coned already; both in pots and planted out here in Sacramento. There's hope!!!

F

Hi F - can you post a pic?

Resin

F- the oldest plants in cultivation in the west have not been observed bearing cones, so until we see a photo...

My guess: Cryptomeria

I'd not want to rule it out as being a misident, as Sacramento gets rather more summer heat and sun to stimulate cone production than other places Taiwania has been tried for longer. But I do still want to see a photo!

The other obvious place to look for cone production on cultivated trees is Florida / southern Georgia / southern Alabama.

Resin

Hi guys:

I'm in the Windy City for a few days but will post as soon as I return to Sacto.

I picked up a flat of these plants as seedlings literally from the trash heap at the Eddy Arboretum whilst on a tour; no one knew what they were but they look like the Taiwania I've seen in other arboreta. I've seen and grown many varieties of Cryptomeria; don't think that these plants belong to that genus. Anyway, it'll be interesting to get the experts' input.

F