Hi All

Pictured is my Milk Tree. I have had him for a little over a year now and never had any problems. He's grown an exceptional amount and always seemed healthy and happy.
However in the last week one of his branches/stalks (pictured) has wilted, become soft to the touch and broken over at a weak point. I've also noticed that the outer layer of "skin" peels off when handled.
None of the other branches/stalks ste like this and I aim to keep it that way. Does anyone know what could have cause this to happen and what I can do to prevent it from happening to the rest of my plant? I've really become rather fond of him.

Thank you in advance for any and all advice.
-Em

How have you been watering it? It almost sound like root rot. Does that pot have drainage holes?

Yes the pot has several large drainage holes and I only water it once a week at most usually every 2weeks. When the soil is dry an inch down.

Em - Those symptoms don't necessarily have a single specific cause. However, it is likely to be either a light or watering problem.

Your Euphorbia really needs to be right in front of and close to a sunny indoor window to do well. It will look fine for quite a while in reduced light, but eventually, the lack of really good light will cause it to deteriorate.

Weekly or even bi-weekly watering could be too much depending on how much light it gets and how much water you provide at each watering. The soil should be dry several inches deep into the pot before watering. Add just enough water so that it reaches that level of dryness again in about two weeks.

Thank you, I just moved him into a darker room of the house but wasn't concerned as he was still getting indirect light.
I will try moving him back and see how it goes.