I am back again with another issue of Plumeria leaves. It was raining for 7 days ( Not continuously but it was raining like the rainy season). I noticed the brown spots on my Plumeria leaves as you can see in the above picture.
I will first tell what I noticed and then I will talk about the solution or treatment. I have treated these brown spots and it really worked for me.
The brown spots are not on a single leaf. The spots were spreading so fast that I could not notice before they attacked more than 10 leaves. (Actually, I have a lot of plants so it's difficult for me to keep an eye on all the plants )
The brown spots can turn black and make holes in plumeria leaves. The spots are like dots on the leaves. Not all the dots are in circular form.
What causes brown spots on Plumeria leaves?
You might be thinking that these are due to rust fungus and these are rust on Plumeria. Don't get confused with rust. Rust is a different disease and if you want to check how rust-infected leaves look like on Plumeria, you can check this: Get rid of Plumeria Rust. (In that case, you can use water and hydrogen peroxide mix and spray on the infected leaves.)
If you notice any leaf like this below, then it might indicate your Plumeria plant is going towards dormancy and you should check my winter care guidelines for Plumeria.
There you will also see the rust-infected leaves picture and you can follow the treatment.
After rain, if the leaves get heavy direct sunlight and warm temperatures, these brown spots occur.
The major reason is sudden temperature change and humidity changes.
The brown spots can turn black if untreated. You can check the below image:
How to fix brown spots on Plumeria Leaves?
If there is no sign of Leaves Yellowing then no need to worry much about this problem.
No need to cut off the infected leaves as these are not as harmful as you think. It will be automatically fixed before the blooming season.
- Just stop using fertilizer for a month (if you are applying any).
- Water only twice in a week.
- If it's possible then keep the plant under shade in the daytime when the sun is shining at its peak. (For a few days)
The top side of the leaves will look like this:
When winter is approaching you can notice more brown spots. It's better to check the winter care guide for plumeria.
