My dieffenbachia leaves are turning yellow. I check the soil before watering and have tried every solution to this problem but I still don't understand why is this happening. Please help, I love this plant and would like to have big green leaves. I have snipped off the yellow leaves. The don't look as yellow in the pic as they actually are. Pictures sent are when I bought them a month ago and what they look like today. Thank you. Niloofer
From the photos, the plant looks reasonably good. And if there is no new yellowing of foliage with the two weeks of dry conditions, then you may have answered your own question.
I'm not sure what happened, but over watering could be a factor, it's the most common problem with dieffenbachia. Since soils and pots and drainage are different with each plant, I use multiple assessment observations to get the watering right, physical and intuitive. I finger probe the soil surface, use a soil moisture meter for deeper soil moisture assessment, look at the foliage for possible wilting, and I try to "feel" the plant needs if you will. After so many years of trying to tune in to plant needs, I think they call me in their own way and tell me when they need water. ?
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm
https://www.gardeningknowhow.com/houseplants/dumb-cane/growing-dumbcane-dieffenbachia.htm
I tried moving it to another location; it has been going for years. I don't have a photo
Did moving the plant to a new location help?
Here are things to check for:
Spider mites, aphids or other sucking insects; treat with insecticidal soap.
Low humidity
Low light
Over or underwatering
Here is a link to the proper care of dieffenbachia that should help:
https://www.gardeningknowhow.com/houseplants/dumb-cane/growing-dumbcane-dieffenbachia.htm
The growth is very top heavy. I placed it in a deep pot but still it falls
You may need to stake it, or support it with a cable from the brick wall.
Make sure you do rotate the plant to ensure even growth.
Only new leaves growing out are brown.
If these are outside, then possibly. If they are in window light, then you won't, usually, have to worry about sunbleaching.
This can also be caused by overwatering, or not letting the soil dry out just a touch before watering again. The most common cause of what you are seeing is, exactly, this.
If moving to a less heavily lit spot doesn't help, you will want to look to a fungicide.
This article will help: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
The plant lives in a pot outside in Florida. Except for the stalk, it looks healthy- still healthy leaves. When I was moving my plants I noticed the stalk is brown from about two inches up from the soil to about two inches below the first leaves-maybe 6 inches of brown dry stalk - looks like something was eating it. It is narrower diameter and still firm in this "eaten" area. Above and below are healthy green stalk. No sign of bugs or holes in leaves; plant looks healthy. What should I do?
I would propagate some new plants. Here is how.
https://www.gardeningknowhow.com/houseplants/dumb-cane/propagating-dieffenbachia.htm
https://www.gardeningknowhow.com/houseplants/dumb-cane/growing-dumbcane-dieffenbachia.htm
It's tiny and dust like, almost like saw dust. The plant is otherwise very healthy.
Those are aphids and they suck sap from your plant. You can wipe them off with a wet paper towel or rinse them under water. You can also use insecticidal soap or Neem oil. This article should help:
https://www.gardeningknowhow.com/houseplants/hpgen/common-bugs-and-pests-on-houseplants.htm
I recently cut my dieffenbachia plant and now it is forming blooms. Should I cut these off?
It will not hurt the plant at all to leave them on. Taking them off, however, will allow the plant to continue to grow leaves and stalks a little faster.
This article will give you more information on the care of these plants: https://www.gardeningknowhow.com/houseplants/dumb-cane/growing-dumbcane-dieffenbachia.htm