Now, I think they are yellow loosestrife. I am worried the shrubs might be invasive. According to what I could find in my books, only Purple loosestrife is invasive but Yellow is not invasive. As you can see from the picture below I am about to throw them away, then I thought about bringing the situation to this forum.t is not invasive but it does spread. I just rip out what I don't want each spring. It's a wonderful perennial that blooms much longer than most perennials. I am amazed to see a variegated yellow loosestrife, ie, one with green and white foliage rather than plain green.
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