Black dots on banana leaves - What causes it?
 

Several of my banana plants that are in the ground in direct sunlight all day are getting black dots on some of their leaves - usually on the older leaves.

Is it too much sun? Or too much water?

My Orinoco had this when it was younger but went away as it grew.

These are younger plants so my guess is just too much sun. Can anyone confirm?

Re: Black dots on banana leaves - What causes it?
 

Deterioration.
You will notice much happening as a leaf gets older.
Water repellency diminishes leading to decay and mold growth to name a few.
Wait till the days get even shorter and the morning dews get heavier.

Then it becomes this..:)

Normal for this type of plant......but unsightly.

Me.... I do some trimming.

.
Dead leaf removal
by
Hostafarian,
on Flickr

Re: Black dots on banana leaves - What causes it?
 

That's a ton of different leaves of all colors, shapes and sizes!! :08:

Yeah I know older leaves deteriorate and I trim them back too but it's only happening to the ones in the ground in full sun, not my potted plants in the shade.

But you did mention something... morning dew
The ones in the ground have a ton of morning dew everyday so that might be it

Re: Black dots on banana leaves - What causes it?
 

Y0u are over-analyzing. Chill out.

Re: Black dots on banana leaves - What causes it?
 

My inground plants do the same.
As the season shortens and your plants pull back your plants and most other plants will do this.
Fall is embracing us 1+ minute of less sunlight a day.
Expect dramatic changes once the days shorten even more and the average temp changes .
Once you get a few seasonal cycles under your belt you will be able to predict the personality of your plants.

Do not interpret this as something you are doing wrong with the plant...
Nature is giving your plant less light and less heat..

My inground plants that are affected....

AeAe
Basjoo
Cannibis
Dwarf red
Namwah
Mekong
Thai Black.
Tanee
Variegated Namwah
And others