Dieffenbachia brown tips

Dry points can follow a root ball that repeatedly dries hard, excessive fertilizer, or hot airflow. The same damage with yellowing and wilt requires checking root health.

Water the whole root ball

Water after the upper mix dries, applying it evenly and draining all runoff. If deposits crust the mix, reduce feeding and flush only when healthy roots and open drainage make a normal watering appropriate.

Move leaves away from heating vents. Trim dead points if desired, retaining green tissue. Wear gloves for pruning and avoid contact with the sap, which can irritate skin and eyes.