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Post by lilly7430 on Dec 10, 2010 23:07:05 GMT
Hello, My name is Lilly and I have been growing Nepenthes for about two years, with some other carnivorous plants. I am new to this forum and I'm having some issues with my Nepenthes due to red dots on their leaves. Maybe its rust spot? I have no idea. I bought Nem Oil and a sulfur based fungicide called Natria from bayer. I haven't used anything on the leaves yet, as I would like some advice. I attached a picture of my N. rafflesiana with the red dots on its leaves, please take a look. Thank you! -Lilly Attachments:
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Post by peterhewitt on Dec 11, 2010 10:07:24 GMT
I may be wrong, but it seems like your plant is getting a lot of sunlight. Many of my plants exhibit this kind of coloring since they grow in full sunlight(especially lowlanders, that don't like too much). If your plant is not getting a lot of sunlight, then this kind of damage could be Mite related, this would need a Miticide and not an Insecticide.
N.Rafflesiana does not like very much direct sun. Mine are growing under 45% shade and still the leaves are very red.
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Post by lilly7430 on Dec 11, 2010 19:12:17 GMT
I felt that it may have been the new artificial light I put in that caused the dots, because they seemed to appear right after I put some refective materail around the set up to reflect more lights back to the plants. Two of my tallest plants also had a little splotching of red on their leaves after I added the reflective material, but it did not occur on the new leaves. I did lower rafflesiana away from the light. Do you think I should move it down more, or that it will eventually get used to the amount of light?
On the Nem Oil bottle it said it acts as a miticide as well. So I figured I would dose them twice according the the directions and go from there, because I did see tiny black bug critters with my magnifying glass. I have systemic pesticide as well, but I'd like to use that as a last resort because it is rather toxic.
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Post by peterhewitt on Dec 11, 2010 23:14:05 GMT
The coloring is then definitely from the new light arrangements. Your plant will get used to the light, but it may still produce some red pigment, this is just plant sunscreen, and indicates a healthy Nepenthes. as long as there is no "Burning".
You will always have Fungus gnats flying around your plants, this is normal. But an occasional preventative treatment will not hurt. If you are trying to rid yourself of the Fungus gnats that are always present in wet soil conditions, you will have a hard time. They are not detrimental to adult plants for the most part. As long as their presence is not Massive.
You could probably move your Raff closer to the light again, it will acclimate.
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