Problem Plant: Purple Loosestrife

Purple Loosestrife (Lythrum salicaria)          

Although considered highly invasive, this plant of Eurasian origin is still available
for sale. It was introduced as a contaminant in ships’ ballast and as a medicinal
herb and has spread along roads, canals, and drainage ditches to degrade
wetlands since the early 1800s. Nearly all states and many Canadian provinces
have been infested.

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Tags: Highly invasive plant with woody tap roots, Spreads in wetlands, dominating and disrupting natural habitat, Changes water flow patterns, Eliminates food sources and cover plants for marsh animals, Produces numerous minute seeds easily carried by wind and water, Also re-sprouts from root pieces, Cardinal Flower (Lobelia cardinalis), Gayfeather/ Blazing Star (Liatris spicata), Great Blue Lobelia (Lobelia siphilitica), Joe Pye Weed (Eutrochium fistulosum), New York Ironweed (Vernonia noveboracensis), Simpler’s Joy/ Blue Vervain (Verbena hastata), Swamp Milkweed (Asclepias incarnata), Sweet Pepperbush (Clethra alnifolia) developed, Wet-tolerant perennial with long bloom season