Need help from you Oregon natives! We have this plant in our goat pen that they just go crazy for. It hasn't affected them any that I can see, but I want to make sure it isn't poisonous. It has stems like bamboo, but it branches off and has different leaves. I thought it was knotweed but it doesn't have purple spots, and it has different branches than I've seen on the knotweed, which seems to have short, thin limbs, like sticks, while the plant I have actually branches off looking exactly like the stem. The goats eat everything on it, once they are done with the leaves they go for the stems, which appear to be very juicy. It's about 5-6 ft tall...however I've seen other stems that were about 1-2 feet tall, that had either been run over by a mower, or the goats ate it down. Anyone have any idea of what this is? Pics wouldn't really help now since the goats devoured it...wish I could get some though. Thank you for any info!