[Hummer344]

My Dend. Kingianum is loosing leaves at a great rate. Its acting like it got frost bitten but it hasn't been that cold here & it has been protected on my front poarch. A little morning sun then filtered light the rest of the morning then shade during the afternoon. Leaves just dryed up and fell off. Probably 80% of the leaves. I checked the potting medium and it wasn't all that bad and the roots were all right but not great. Since I had it out I re-potted it in a clean potting mix. Figured that it was in shock anyway, new potted stuff wouldn't hurt it now. Any ideas what is going on?
Thanks
david