Purple Loosestrife: Beautiful But Dangerous Invasive to Avoid

That stunning purple loosestrife (Lythrum salicaria 'Dropmore Purple') at the garden center may be tempting, but think twice before planting. Twenty-four states classify this European import as a noxious weed, and for good reason. Introduced in the early 1800s, each plant produces an average of 2.7 million seeds, allowing it to rapidly colonize wetlands, clog waterways, outcompete native plants, and destroy duck nesting habitat.

Cultivars like 'Morden Pink' and 'Dropmore Purple' were once marketed as sterile, but University of Minnesota research proved they readily cross-pollinate with wild populations. While Georgia hasn't yet classified it as noxious—largely because large-scale invasions haven't occurred—our lakesides and river marshes provide perfect habitat. Given our history with kudzu, Chinese wisteria, and privet, the wise gardener avoids purple loosestrife entirely.