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| Hello everyone. I have an accidental garden growing on what used to be my compost heap, which, as it turns out, was more of a lasagna garden. Anyhoo, I have around 60 plants of 6 different varieties growing and am kind of excited to see where this goes. These ones, I think, are pumpkin seedlings. They were growing beautifully until just recently when they started to develop these yellow spots. I've looked at similar posts and have read the possibilities, but was hoping this picture would help in the proper diagnosis. Is it possible that they need fertilizer? I've read that fertilizing too early could harm them. Or do you think it's a fungus or insect problem? I had noticed a powdery white substance on one of them and had removed it so it wouldn't spread- but maybe it did? All input appreciated! Thanks |
Follow-Up Postings:
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- Posted by Slimy_Okra 2b (My Page) on Fri, May 9, 14 at 12:11
| Unless I have bad eyesight, these plants look fine. |
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| The yellow spots are early Downy Mildew. The white you say was likely Powdery Mildew. Both are fungus problems. Begin regular fungicide applications and remove affected leaves. Increase sun exposure to the max possible and avoid over-watering until the soil dries out quite a bit. Wet soil encourages both.. You don't indicate your location or zone but in most of the country it is too early for the plants to be mulched like that. So unless you are in the deep south or So CA it keeps the spring soil and surrounding area too cool and wet. I'd suggest pulling it back from the plants so the area can dry out some. The replace it once the soil temps reach summer levels. Dave |
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| Thanks for responding! I went ahead and removed the affected leaves and applied fungicide. I also moved the mulch out of the way. Today I noticed the cotyledons are nearly all yellow- this is normal, right? I keep reading that they eventually wither and fall away, but should they yellow? Thanks again. |
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