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Radio Links: Invasive Species
From the blog to the radio today:
Our guests Mandy Tu and Steve Herman weighed in on Kyle Spinks' ongoing efforts for Tualatin Hills Park and Recreation District. And Ed Jahn took up meltog's question about the origin of invasive species.
And from the radio right back to the blog:
It happened quickly, but perhaps you heard Steve Herman mention "allelopathic" plants. And perhaps, like me, you had no idea what he was talking about. It turns out that allelopaths are plants that release chemicals into the soil that promote or -- more likely -- inhibit the growth of other plants. More here.
Finally, a quick clarification, courtesy of a careful listener from the Columbia Gorge. One of our callers had mentioned tansy ragwort, a weed that is poisonous to cows and horses. In case you were confused, this is NOT the same thing as common tansy, which is a perennial herb in the sunflower family -- and something you might intentionally be growing in your garden. Still, even though you can find some old medicinal recipes for common tansy, apparently it's toxic in high doses.
Amazing the things you find in your voicemail after the show ends!
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