@rso_5.11:

حوراء التكريتيه
حوراء التكريتيه
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Friday 29 March 2024 21:44:40 GMT
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Is poison ivy actually poisonous in winter? 🧪 I have a lot of reflections about this, but first, I’d like to address something. A lot of people are going to say “oh, you just aren’t that sensitive to poison ivy, that’s why you didn’t react before.” and I don’t think that is true. Here are some thoughts. First, I know I’m sensitive to poison ivy. The fact that I had a reaction to the inner bark proves that to be true. It wasn’t shown enough in this short video, but I really rubbed the bark, buds, and hairs on my arms… a LOT. Seeing that I had ZERO reaction whatsoever (there were multiple days between experiments as well) makes me think that there is likely little to no urushiol present on the vines in the winter (particularly late winter; this may not be the case immediately after the leaves fall). We don’t know the exact purpose of urushiol being present in Toxicodendron (it’s not to deter herbivory as most species do not react as we do), but its function may not be as required in the winter, so the plant won’t bother to expend energy producing it on the exterior when it is in its dormant stage. So, the biggest thing I learned from this experiment is that for most people, it is likely far safer to remove poison ivy vines in the winter than in the summer. You’ll either have to deal with leaves loaded with urushiol then the inner bark which also has it, or just the inner bark along. I know which one I would pick! Please DO NOT try to replicate my experiment. In truth, I got far too careless towards the end. Serious injury can occur from poison ivy exposure. Please be careful. #poisonivy  #toxicodendron
Is poison ivy actually poisonous in winter? 🧪 I have a lot of reflections about this, but first, I’d like to address something. A lot of people are going to say “oh, you just aren’t that sensitive to poison ivy, that’s why you didn’t react before.” and I don’t think that is true. Here are some thoughts. First, I know I’m sensitive to poison ivy. The fact that I had a reaction to the inner bark proves that to be true. It wasn’t shown enough in this short video, but I really rubbed the bark, buds, and hairs on my arms… a LOT. Seeing that I had ZERO reaction whatsoever (there were multiple days between experiments as well) makes me think that there is likely little to no urushiol present on the vines in the winter (particularly late winter; this may not be the case immediately after the leaves fall). We don’t know the exact purpose of urushiol being present in Toxicodendron (it’s not to deter herbivory as most species do not react as we do), but its function may not be as required in the winter, so the plant won’t bother to expend energy producing it on the exterior when it is in its dormant stage. So, the biggest thing I learned from this experiment is that for most people, it is likely far safer to remove poison ivy vines in the winter than in the summer. You’ll either have to deal with leaves loaded with urushiol then the inner bark which also has it, or just the inner bark along. I know which one I would pick! Please DO NOT try to replicate my experiment. In truth, I got far too careless towards the end. Serious injury can occur from poison ivy exposure. Please be careful. #poisonivy #toxicodendron

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