We are having dracena for a year now, allways on same place. It' actualy 5 plants of different size in one container. About a month a go one of them started loosing leaves. Leafs are green and healthy but the branch itself is kind of strange like its dried out. Tip of the branch is white at begining and then it turns to brown and becomes dry. Leafs are green and they fall of simply by touching them.
We are watering it once every week with 1/2 liter of water from the begining. Container has double bottom for drainage.
I was reading forums and found out that too much water can cause this but never saw a picture of plant like our. We pulled it out and soil was moistured but nothing special, its not like it was soaking wet. We put new soil but left the soil around roots intacked.
In pictures youll see problematic plant and the healthy one, and also how roots look. We left this soil around roots, and added new one.
Any advices in what to do?