old man cactus has formed a crater on its side
My old man cactus has formed a crater on its side. What is happening to it and is it infected and able to infect my other plants?
Certified GKH Gardening Expert
Make sure you are not overwatering your dish garden.
Your cactus may have developed a fungus or root rot.
If the cactus is soft and mushy, you may not be able to save it.
Here is a link to refresh you on the care requirements.