I’m having the same problem. You need to get Neem Oil at lowes or any place that sells it. Make sure you take any leaves off that have the rust on them. Spray the clean leaves on both sides. Make sure you throw away any contaminated leaves. Your plumeria (frangipangi) should be fine.
Hi, Sallith. First of all, you can't really 'avoid' the rust. Fungus spores are always in the air. So, with that said, what to do? Plumerias are a tropical plant that love high humidity and filtered light - which by the way, is what funguses like too. If you are misting your plumeria, do it in the morning so it will dry quickly and any passing spores won't stick. The easiest thing to do before you see rust spots is to gently wipe the leaves to keep them clean before the rust spores settle in. I just take a damp paper towel and stroke it across the tops and bottoms about once a week or so. No rust. Also note that the rust won't actually hurt the plant unless its overtaken the whole thing.
Yes, Sonja is right about the Neen Oil, but make sure you get 100% organic natural Neem Oil and mix according to package directions, as some of the premixed Neem Oils have other things in them & do not work as well. You can also water the plant with the Neem Oil as it works systemically as well as a foliar spray.
Agree with the Neem Oil. In my neck of the woods Plumerias live outside in full sunlight (high humidity), grow very well and we still have to contend with the spots. Fortunately they are also deciduous, so I get to start with new leaves each season.
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https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htm
I’m having the same problem. You need to get Neem Oil at lowes or any place that sells it. Make sure you take any leaves off that have the rust on them. Spray the clean leaves on both sides. Make sure you throw away any contaminated leaves. Your plumeria (frangipangi) should be fine.
https://baliadvertiser.biz/dealing-with-frangipani-rust/
Hi, Sallith. First of all, you can't really 'avoid' the rust. Fungus spores are always in the air. So, with that said, what to do? Plumerias are a tropical plant that love high humidity and filtered light - which by the way, is what funguses like too. If you are misting your plumeria, do it in the morning so it will dry quickly and any passing spores won't stick. The easiest thing to do before you see rust spots is to gently wipe the leaves to keep them clean before the rust spores settle in. I just take a damp paper towel and stroke it across the tops and bottoms about once a week or so. No rust. Also note that the rust won't actually hurt the plant unless its overtaken the whole thing.
Yes, Sonja is right about the Neen Oil, but make sure you get 100% organic natural Neem Oil and mix according to package directions, as some of the premixed Neem Oils have other things in them & do not work as well. You can also water the plant with the Neem Oil as it works systemically as well as a foliar spray.
Agree with the Neem Oil. In my neck of the woods Plumerias live outside in full sunlight (high humidity), grow very well and we still have to contend with the spots. Fortunately they are also deciduous, so I get to start with new leaves each season.
Can you post a close-up of spots? It may not be a fungus.