Why Dieffenbachia HousePlants Get Yellow Leaves

Hi Judy,
Can you tell me what kind of plant this is and perhaps help me figure out why it is turning yellow? There is new growth, but all the larger, older leaves have turned yellow and died, now I’m losing about three leaves a day. It’s in direct light in my south-facing window.
Thank you!

Hi Rebecca,

Yellow and green Dieffenbachia Plant
Dieffenbachia HousePlant

Your plant is a very poisonous houseplant called a Dieffenbachia. Dieffenbachia houseplants may get yellow leaves for a couple of reasons. If the temperature gets too cold or the dieffenbachia is near an air conditioner, leaves turn yellow. If the soil of a dieffenbachia gets too dry and the plant wilts, a dieffenbachia gets yellow leaves. If the bottom leaves are not getting enough light, this causes yellow leaves. You can read more of my care tips for dieffenbachia houseplants in the Popular HousePlant section of the website.