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Thread: Rust on Nepenthes?

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    Courtney's Avatar
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    Finally, here is a picture of the spots that are happening on my leaves. The damage seems to mostly come from underneath the leaf. The areas that are rust colored tend to have a rougher texture than the healthy parts of the leaf.

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    Nepenthes Specialist nepenthes gracilis's Avatar
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    That looks like rust to me. Remember, rust is a basidiomycete, which means it usually has two hosts....so if you have plants nearby with rust they could inoculating the Nep leaves with urideospores. Any generic fungicide should be plenty safe to use on your nep.

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    Courtney's Avatar
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    Quote Originally Posted by nepenthes gracilis View Post
    That looks like rust to me. Remember, rust is a basidiomycete, which means it usually has two hosts....so if you have plants nearby with rust they could inoculating the Nep leaves with urideospores. Any generic fungicide should be plenty safe to use on your nep.
    This is very helpful information! I bought some neem oil spray from the nursery. Do you recommend I spray the other neps that are next to this plant? For some reason, none of my other nepenthes that are next to it have exhibited any of the same signs of rust. Perhaps I should wait to see if they develop symptoms before I hit them with the neem?

  4. #12
    Nepenthes Specialist nepenthes gracilis's Avatar
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    Why would you use neem oil? Neem is more geared for pest problems, specifically insect pests, not a fungus problem. I would lean more towards a fungicide like Clearys or even a generic soap to help bulk up the waxy layer on your plants leafs, if a plant has really thick cuticles or a wax layer is makes it much more difficult for a germ tube from a germinating spore to penetrate into the plant. Eventually the rust will go away with some fungicide application, whatever product you chose to use, just remember, follow the directions very carefully.

  5. #13
    Courtney's Avatar
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    I bought it because the guy at the nursery recommended it. It is what he recommended I use for rust.

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