Giant Yucca Transplant Problems

Our neighbour donated a giant yucca (8ft tallish) when they were re-landscaping and as we didn't have anywhere immediate to plant it in the ground we put it in a 285L tub. As you can see from the picture its not liking its new home much. Its been there for 4 months now and is losing leaves quicker than its growing new ones. Is it time to find somewhere in the ground for it before we lose it? Do they eventually settle in pots?

 

Its a cordyline, my experience is they dont like being moved when established.

If it does recover it will be very slow I'm thinking.

 

Full pic

 

If it had been a yucca you would have had a better outcome.

 

You could try to revive it by reducing the trunks by half or more. New shoots will emerge as buds below the cuts and then grow to create another multi-headed plant, assuming the root ball is alive. It will also be far happier in the ground as Cordylines produce large tap roots which need soil depth.