Darryl

A few questions:

1) How long have you had this plant?
2) Can you please show me the place where this plant lived most of the time?
3) Please tell me your thought process on watering and exactly how do you water?

Darryl

After several months in such a small pot, a Dieffenbachia will begin shedding its older leaves. If the plant spent most of its time beside your television, that location is extremely low light – you must think of light as “view of the sky” – and, for all indoor plants, they should be placed where they will have the widest possible view of the sky and, if the sun will shine on the plant for longer than 2-3 hours, then block it with a white sheer curtain (this applies to all plants that need “bright indirect light”). So for the past few months, your plant has been starving for the view of the sky.

I would suggest two things:

1) Repot the plant into a bigger pot – gently loosen at least half of the old soil and tease apart some of the roots (don’t worry about breaking a few of them). Use a pot that is about 2-4 inches larger in diameter than the current one.

2) Get a fertilizer with ratio 3-1-2 and use it as directed on the package in terms of dilution strength BUT, use it whenever you see new leaves growing (not exactly during “spring” or “summer”).

Your plant is still looking fine. Dieffenbachias are sturdy plants that should last many years. Good luck!