Rot on stem
 

I have a few plants with a brown rot spreading thru them.

Anyone know what it is?

Re: Rot on stem
 

How wet is the potting soil? ... What is the size of of the pstem (diameter?)? Is there any green leaves still showing?

The black rot is down to the soil. But also, the pstem is no longer green but yellowish. These details, without other info, seems to indicate root rot has set in and the pstem is dying or is dead. ... For young banana plants this will be hard to stop or cure. The only way to know is to dig out the corm; clean & trim off any black mushy roots & corm; and cut off the pstem a few inches above the soil line. Then replant into sand with a small amount of water. Then wait until you see any sign of new growth (about 6 to 8 weeks ??). ... just my opinion.

Re: Rot on stem
 

I have about 3 plants in different pots with similar iasues.

I dont think i over watered but i may have.

Diameter is about 6 inches.

Is there a fungicide that would kill the rot?

Re: Rot on stem
 

Can the soil be treated??

Re: Rot on stem
 

it is rot and must be 100% removed.

Re: Rot on stem
 

This is not so much as a fungus, but the potting soil is too wet drowning the roots. Thus rot set in. ... New roots must regrow. So use sand after cutting all the rot off and bleaching the corm to kill any rot pathogens remaining. .... Generally, just get a new plant. It's less stressful on you as the rehabilitation process will take a long time. Then you will have two nanas, if you are successful.

The problem with young banana plants is:

• corm not big enough & no reserve energy to regrow
• corm has not formed any new growing points, thus the top grow point must still be viable.
• corm too small and the rot quickly gets to the core, rotting the whole corm.

Re: Rot on stem
 

To me it looks like the bottom of the next leaf that has or will soon expire and is naturally turning brown.
I see that you have peeled an older brown dried p-stem off to expose this leaf and you are concerned.

If this stem is from a leaf that is at its end of useful life my guess is it will dry up just like the one you peeled off.

A broad photo of the whole plant with leaves will reveal more of its health, especially the leaf connected the the pstem in question.