Question
Hello.  I live in S. California by the beach.  I have 2 aloe plants that are about 2.5 feet tall.  A few months ago, I noticed brown spots at the tips of some of the "leaves."  They are mostly on the leaves toward the bottom.  Over time, the brown has moved down the leaves, leaving the dark brown part limp and it appears to be dying.  It is affecting both aloe plants and I would like to know what it is and how to fix it.  Any suggestions are welcome.  

Thank you.

Answer
Hello Rafa,

This sounds very much like a bacterial or fungal infection. Does the tissue become mushy as it browns, or is it simply limp.  After it becomes limp, does it become dry and brittle?

Some bacteria (and fungi) feed on the plant cells, and they exude enzymes that cause the cell walls to break down and release their contents.

I am sorry to say that I am not really familiar with the bacterial or fungal species that may be present in your area, so I can only make a generalized "guess".  

Such diseases can be transmitted by sucking insects or by mechanical damage through which the bacterial cells and fungal spores are admitted.

If you notice any small plants emerging from the larger ones, cut them off and isolate them from the "mother" plant.  That way you will have another plant to take the place if the older plant dies.

Sorry that I cannot be more specific, but if you can give me as much information (or photos) as possible, I might be able to help more.

Photos can be sent to me at:

[email protected]