Hi, Does anyone know exactly how toxic sunflowers are to other plants? I've been looking for information on the Net and it varies tremendously. On the one hand you see things like "good companion plant for x" and on the other, scientific studies that have isolated toxins in the water that drips off the leaves! Some sites say it's the hulls that are the real killers, others say the roots exude toxic chemicals. I saw one site that said the toxin from the hulls would be gone in two months, and another that said farmers who grow sunflowers as a crop have to rotate them (probably not a bad idea for any crop...) because the toxins build up and actually poison the sunflowers themselves. And then there are sites about interplanting sunflowers with crops to kill the weeds -- but why doesn't it kill the crops? Anyway, I had what may end up being a 12-foot sunflower proudly planted in the middle of one of my vegetable beds and then I remembered that information, so I pulled it out and planted it in a container so it wouldn't poison my vegetables! But it would have looked nice in the middle of the bed. For future reference, how much damage would it do? Thanks for any input!