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Do you feed your wild birds sunflower seeds? I know I do! Well, apparently sunflower roots secrete a toxin that inhibits the germination of other plants. This natural defense, called allelopathy, also is exhibited by plants such as Artemesia, barley and black walnut trees. So volunteer seedlings need to be pulled up and relocated somewhere else as does the bird feeder. If sunflowers are grown from seed better to start them in a separate patch away from other planting areas. I just found this out today!!
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