Attached is a photo of a cactus that you repotted for me a year or two ago. I water it every 2 weeks as you advised. This morning it was leaning a little and this afternoon it went all the way over. Any suggestions as to why, what I need to do, are the others at risk?
Thank you for any help you can give.
It’s hard to tell what happened from the small photo. But in general Cleistocactus have a life cycle where each individual branch only lives 7-10 years and then dies, generally by breaking off at a rot spot. They grow new branches as it goes. If this is what has happened then you can cut this branch off. New branches will eventually grow and replace it. However, as best I can tell the branch is bending not breaking, and if there is no rot down at the bend, then it is possible that this is a case of too much water for the location. Cleistocactus can sometimes start sprawling like that, but usually if its growing too fast. So while we recommend more water in sunnier locations, as much as once every 2 weeks, it needs less water if it’s not getting all day sun – every 3 weeks or so. Also, as it is sitting in a saucer, you want to make sure that it doesn’t actually fill up with water. The soil needs to dry out between waterings, and sitting in water keeps the soil moist.